PublicaTIONS

Instituto de Física dos Materiais da Universidade do Porto

Instituto de Nanotecnologias-Unidade IFIMUP

 

Physics department FCUP

 

Rua do Campo Alegre, 687

4169-007 Porto

Portugal

 

Contacts:

Tel: +351-22-0402334

Fax: +351 220402706

email: jearaujo@fc.up.pt

Publications.

 

Papers in international scientific periodicals with referees

 

1. Critical Behavior of Magnetoresistivity in La2/3Ca1/3MnO3 J. B. Sousa, V. S. Amaral, Yu. G. Pogorelov, A. L. Guimarães, J. P. Araújo, M. E. Braga, J. A. Mendes, M. R. Ibarra, P. Algarabel, J. Blasco, J. García, C. Marquina, A. del Moral, J. M. de Teresa Journal of Applied Physics, 81 (1997) 5760

2. Deposition of Magnetoresistive La1-xCaxMnO3 Thin Films by Aerosol-Assisted MOCVD P. B. Tavares, V. S. Amaral, J. P. Araújo, A.A.C.S. Lourenço, J. B. Sousa, J. M. Vieira Key Engineering Materials, 132-136 (1997) 1416

3. Giant Magnetoresistance in La1-xCaxMnO3 Ceramics and Thin Films J. P. Araújo, P. B. Tavares, V. S. Amaral, A.A.C.S. Lourenço, J. B. Sousa, J. M. Vieira Key Engineering Materials, 132-136 (1997) 1412

4. Microscopic Studies of Radioactive Hg Implanted in YBa2Cu3O7 Superconducting Thin Films V. S. Amaral, J. G. Correia, A. A. C. S. Lourenço, J. G. Marques, J. A. Mendes, M. A. V. Baptista, J. P. Araújo, J. M. Moreira, J. B. Sousa, E. Alves, M. F. da Silva, J. C. Soares Journal of Magnetism and Magnetic Materials, 177-181 (1998) 511

5. Anomalous Low-Field Magnetization in La2/3Ca1/3MnO3 near the Critical Point: Stable Clusters? V. S. Amaral, J. P. Araújo, Yu. G. Pogorelov, J. B. Sousa, P. B. Tavares, J. M. Vieira, J. M. B. Lopes dos Santos, A. A. C. S. Lourenço, P. Algarabel Journal of Applied Physics, 83 (1998) 7154

6. Stability Studies of Hg Implanted YBa2Cu3O6+x J. P. Araújo, J. G. Correia, U. Wahl, J. G. Marques, E. Alves, V. S. Amaral, A. A. Lourenço, V. Galindo, T. Von Papen, J. P. Sénateur, F. Weiss, A. Vantomme, G. Langouche, A. A. Melo, M. F. da Silva, J. C. Soares, J. B. Sousa and the ISOLDE Collaboration Nuclear Instruments & Methods in Physics Research B, 147 (1999) 244

7. Deposition of La-CaMnO3 Thin Films Using Aerosol-Assisted MOCVD: Substrate and Annealing Effects P. B. Tavares, V. S. Amaral, J. P. Araújo, A. A. C. S. Lourenço, J. M. Vieira, J. B. Sousa Journal of Magnetism and Magnetic Materials, 196-197 (1999) 490

8. Properties of Epitaxial LaCaMnO Laser Ablated Thin Films on (100) and (110) SrTiO3 Substrates A. A. C. S. Lourenço, J. P. Araújo, V. S. Amaral, P. B. Tavares, J. B. Sousa, J. M. Vieira, E. Alves, M. F. da Silva e J. C. Soares Journal of Magnetism and Magnetic Materials, 196-197 (1999) 495

9. Stability and Diffusion of Hg Implanted YBa2Cu3O6+x J. P. Araújo, J. G. Correia, U. Wahl, J. G. Marques, E. Alves, V. S. Amaral, A. A. Lourenço, V. Galindo, T. Von Papen, J. P. Sénateur, F. Weiss, A. Vantomme, G. Langouche, A. A. Melo, M. F. da Silva, J. C. Soares, J. B. Sousa and the ISOLDE Collaboration Nuclear Instruments & Methods in Physics Research B, 148 (1999) 807

10. Substrate, Annealing and Mn Excess Effects on La-Ca-MnO3 Thin Films Grown by Metal Organic Chemical Vapor Deposition: a Way to Room Temperature Tc P. B. Tavares, V. S. Amaral, J. P. Araújo, J. B. Sousa A. A. C. S. Lourenço, J. M. Vieira, Journal of Applied Physics, 85 (1999) 5411

11. Er-O Clustering and its influence on the lattice sites of Er in Si U. Wahl, J.G. Correia, J.P. Araújo, A. Vantome, G. Langouche Physica B, 273-274 (1999) 342

12. Anisotropic Transport Properties of Epitaxial La2/3Ca1/3MnO3 Thin Films with Different Growth Orientations V. S. Amaral, A. A. C. S. Lourenço, J. P. Araújo, P. B. Tavares, E. Alves, J. B. Sousa, J. M. Vieira, M. F. da Silva and J. C. Soares. Journal of Magnetism and Magnetic Materials, 211 (2000) 1

13. Anisotropic Electrical Transport in Epitaxial La2/3Ca1/3MnO3 Thin Films V. S. Amaral, A. A. C. S. Lourenço, J. P. Araújo, , A. M. Pereira, J. B. Sousa, P. B. Tavares, J. M. Vieira, E. Alves, M. F. da Silva, J. C. Soares. Journal of Applied Physics, 87 (2000) 5570

14. Electron-gamma perturbed angular correlation studies on high-Tc superconductors J.G. Correia, J. P. Araújo, J. G. Marques, A. R. Ramos, A. A. Lourenço, V. S. Amaral, V. Galindo, J. P. Sénateur, F. Weiss, U. Wahl, A. A. Melo, J. C. Soares, J. B. Sousa and the ISOLDE Collaboration Hyperfine Interactions, 129 (2000) 461

15. Lattice Location of Implanted Cu in Highly Doped Si U. Wahl, A. Vantomme, G. Langouche, J.P. Araújo, L. Peralta, J.G. Correia Applied Physics Letters 77 (2000) 2142

16. Emission channeling studies of Pr in GaN U. Wahl, A. Vantomme, G. Langouche, J.P. Araújo, J.G. Correia Journal of Applied Physics 88 (2000) 1319

17. Local probing of Hg Neighboorhood in HgBa2CuO4+d J.G. Correia, J.P. Araújo, S.M. Loureiro, P. Toulemonde, S. Le Floch, P. Bordet, J.J. Capponi, R. Gatt, W. Tröger, B. Ctortecka, T. Butz, H. Haas, J.G. Marques, J.C. Soares Physica C 341-348 (2000) 1969

18. Development of magnetoresistive shielded heads simulation techniques using conformal mapping M.A.V. Baptista, J.P. Araújo, J.B. Sousa, P.P. Freitas Computational Materials Science 17 (2000) 496

19. Electron-Gamma PAC: New Possibilities for NQI Studies J.G. Correia, J.P. Araújo, J.G. Marques, A.R. Ramos, A.A. Melo, J.C. Soares Zeitschrift fur Naturforschung Teil A 55A (2000) 3

20. Local Od Probing in the High-Tc Superconductor HgBa2CuO4+d J.G. Correia, J.P. Araújo, S.M. Loureiro, P. Toulemonde, S.le floch, P. Bordet, J. Capponni, W. Tröger, B. Cortecka, T. Butz, H. Hass, R. Gatt, J.G. Marques, J.C. Soares Phys. Rev. B 61 (2000) 11769

21. Doping manganites by La-site vacancies and Ca ions: bulk ceramics and thin films J. P. Araújo, V. S. Amaral, P. B. Tavares, F. Lencart-Silva, A. A. C. S. Lourenço, J. B. Sousa, J. M. Vieira Journal of Magnetism and Magnetic Materials, 226-230 (2001) 821

22. Cadmium addition to vacancy doped Lanthanum manganites: from metallic to insulator behaviour J. P. Araújo, V. S. Amaral, P. B. Tavares, A. A. C. S. Lourenço, F. Lencart-Silva, E. Alves, J. B. Sousa, J. M. Vieira Journal of Magnetism and Magnetic Materials, 226-230 (2001) 797

23. Non-linear Conduction in LaCaMnO3 Thin Films: Interface Tunneling Effects V. S. Amaral, J. P. Araújo, A. A. C. S. Lourenço, P. B. Tavares, Yu. G. Pogorelov, J. B. Sousa, J. M. Vieira Journal of Magnetism and Magnetic Materials, 226-230 (2001) 942

24. Anomalous Magnetic Behaviour In La2/3Ca1/3MnO3 Near The Critical Point: Stable Clusters And Crossover To Uniform Ferromagnetism V. S. Amaral, J. P. Araújo, Yu. G. Pogorelov, J. M. B. Lopes dos Santos, P. B. Tavares, A. A. C. S. Lourenço, J. B. Sousa, J. M. Vieira Journal of Magnetism and Magnetic Materials, 226-230 (2001) 837

25. Hyperfine fields at Cd site on La0.67Cd0.25MnO3 CMR manganites J.P. Araújo, J.G. Correia, V.S. Amaral, P.B. Tavares, F. Lencart-Silva, A.A.C.S. Lourenço, J.B. Sousa, J.M. Vieira, J.C. Soares Hyperfine Interactions, 133 (2001) 89

26. Magnetic Phases in Gd1-xYx bulk single crystals and thin films J.P. Araújo, A.M. Pereira, J.A.M. dos Santos, M.A.V. Baptista, J.M. Moreira, V.S. Amaral, J.B. Sousa, S.B.Palmer Journal of Magnetism and Magnetic Materials, 226-230 (2001) 1180

27. Complex magnetic phase behaviour in Gd-rich Gd-Y single crystal alloys J. Collingwood, J.A.M. Santos, J.P. Araújo, J.B. Sousa, J.M. Moreira, C.M. Lim, C. Edwards, S.B. Palmer, D. Fort IEEE Transactions on Magnetics, 37 (2001) 2166

28. Magnetic Phases in Gd1-xYx bulk single crystals and thin films J.P. Araújo, A.M. Pereira, J.A.M. dos Santos, M.A.V. Baptista, J.M. Moreira, V.S. Amaral, J.B. Sousa, S.B. Palmer Journal of Magnetism and Magnetic Materials 226-230 (2001) 1180

29. Emission channeling studies of implanted 167mEr in InP U. Wahl, A. Vantomme, G. Langouche, J.P. Araújo Nuclear Instruments & Methods in Physics Research B 175-177 (2001) 2

30. 80mBr/80Br- A new Electron-gamma PAC probe J.G. Correia, H. Haas, J.P. Araújo, J.G. Marques, A.A. Melo, J.C. Soares Hyperfine Interactions 136 (2001) 155

31. Discontinuous Transition Effects in Manganites: Magnetization Study in the Paramagnetic Phase V. S. Amaral, J. P. Araújo, Yu. G. Pogorelov, J. B. Sousa, P. B. Tavares, J. M. Vieira Journal of Magnetism and Magnetic Materials, 242-245 (2002) 655

32. Magnetic behavior of a nonextensive S-spin system: Possible connections to manganites. M. S. Reis, J. P. Araújo, V. S. Amaral, E. K. Lenzi, I.S. Oliveira Phys. Rev. B, 66 (2002) 134417

33. Substrate and Composition Effects on BSCCO thin Films Deposited by Aerosol-MOCVD P. B. Tavares, V. S. Amaral, J. P. Araújo, M. C. Oliveira, J. M. Vieira Key Engineering Materials, 230-232 (2002) 173

34. Erbium Implantation in Strontium Titanate J.P. Araújo, U. Wahl, E. Alves, J.G. Correia, T. Monteiro, J.C. Soares Nuclear Instruments and Methods in Physics Research B, 191 (2002) 31

35. The Nuclear Quadrupole Interaction of 204mPb in Cadmium monitored by Perturbed Angular Correlations W. Tröger, M. Dietrich, J.P. Araújo, J.G. Correia, H. Haas Zeitschrift fur Naturforschung, 57 (2002) 586

36. Tricritical Points in La-based Ferromagnetic Manganites V. S. Amaral, J. P. Araújo, Yu. G. Pogorelov, J. B. Sousa, P. B. Tavares, J. M. Vieira, P. A. Algarabel, M. R. Ibarra Journal of Applied Physics, 93 (2003) 7646

37. Lattice site and stability of implanted Ag in ZnO E. Rita, U. Wahl, A.M.L. Lopes, J.P. Araújo, J.G. Correia, E. Alves, J.C. Soares Physica B, 340-342 (2003) 240

38. Magnetic phase diagram for a nonextensive system: Experimental connection with manganites M.S. Reis, V.S. Amaral, J.P. Araujo, I.S. Oliveira Phys. Rev. B, 68 (2003) 10404

38. Magnetic phase diagram for a nonextensive system: Experimental connection with manganites M.S. Reis, V.S. Amaral, J.P. Araujo, I.S. Oliveira Phys. Rev. B, 68 (2003) 10404

39. Implantation site of rare-earths in single-crystalline ZnO U. Wahl, E. Rita, J.G. Correia, J.P. Araújo Applied Physics Letters, 82 (2003) 1173

39. Implantation site of rare-earths in single-crystalline ZnO U. Wahl, E. Rita, J.G. Correia, J.P. Araújo Applied Physics Letters, 82 (2003) 1173

40. Magnetocaloric Effect in Manganites: Ferromagnetic and Charge-Ordering Effects M. S. Reis, A. M. Gomes, J. P. Araújo, P. B. Tavares, J. S. Amaral, I. S. Oliveira, V. S. Amaral Materials Science Forum, 455-456 (2004) 148

41. Charge-Ordering and Magnetoelastic Coupling Effects on The Magnetocaloric Properties of Manganites M. S. Reis, A. M. Gomes, J. P. Araújo, P. B. Tavares, J. S. Amaral, I. S. Oliveira, V. S. Amaral Acta Physica Polonica A 105 (2004) 163

42. Phase and structural study of self- doped La1-x-yCaxVacyMnO3+d; F. Figueiras , J.P. Araújo, V.S. Amaral, P.B. Tavares , A.B. Lopes and J.M. Vieira Acta Physica Polonica A 105 (2004) 173

43. Structural and Magnetic Study of Self- Doped La1-x-yCaxVacyMnO3 F. Figueiras, J.P. Araújo, V.S. Amaral, P. B. Tavares, J. B. Sousa, J. M. Vieira. Journal of Magnetism and Magnetic Materials, 272-276 (2004) 1753

44. Local Probe Studies on LaMnO3+d; Using the Perturbed Angular Correlation Technique. A.M.L. Lopes, J.P. Araújo, E. Rita, J.G. Correia, V.S. Amaral, R. Suryanarayanan and the ISOLDE Colaboration Journal of Magnetism and Magnetic Materials, 272-276 (2004) E1671

45. Cadmium Doping at Mn Site in Pr0.5Ca0.5MnO3 A.M.L Lopes, J.P. Araújo, A.M. Gomes, M.S. Reis, V.S. Amaral, P.B. Tavares Journal of Magnetism and Magnetic Materials 272-276 (2004) 1767

46. Perturbed Angular Correlation Study of Pr1-xCaxMnO3: Magnetic and Charge Order Effects A.M.L. Lopes, J.P. Araújo, E. Rita, J.G. Correia, V.S. Amaral, Y. Tomioka, Y. Tokura, R. Suryanarayanan and the ISOLDE Colaboration Journal of Magnetism and Magnetic Materials, 272-276 (2004) E1667

47. Positive and ‘Colossal’ Magnetocaloric Effect due to Charge-Ordering on CMR Manganites M. S. Reis, A. M. Gomes, J. P. Araújo, P. B. Tavares, I. S. Oliveira V. S. Amaral Journal of Magnetism and Magnetic Materials, 272-276 (2004) 2393

48. Magnetic nonextensivity in CMR manganites M. S. Reis, J. P. Araújo, V. S. Amaral, I. S. Oliveira, Journal of Magnetism and Magnetic Materials, 272-276 (2004) 1011

49. Magnetocaloric Effect of Pr0.43Gd0.25Ca0.32MnO3 A. M. Gomes, M. S. Reis, J. P. Araújo, P. B. Tavares, I. S. Oliveira V. S. Amaral Journal of Magnetism and Magnetic Materials, 272-276 (2004) 2385

50. Ion beam studies of single crystalline manganite thin films C. Marques, E. Alves, V. S. Amaral, J. P. Araújo, G. Cristiani , H.-U. Habermeier and J. M. Vieira Nuclear Instruments & Methods in Physics Research B, 219-220 (2004)

51. Unusual behaviour of the electrical resistitivity near the 1st-order magnetostructural transition of Gd5(Si0.1Ge0.9)4 F.C. Correia, J.P. Araújo, J.B. Sousa, M. E. Braga, L.Morellon P.A. Algarabel, M.R. Ibarra Journal of Magnetism and Magnetic Materials, 272-276 (2004) 2370

52. Peculiar magnetic and electrical properties near structural percolation in metal-insulator granular layers J.B. Sousa, J.A.M. Santos, R.F.A. Silva, J.M. Teixeira, J. Ventura, J.P. Araújo, P.P. Freitas, S. Cardoso, Yu. G. Pogorelov, G.N. Kakazei, E. Snoek Journal of Applied Physics 96 (2004) 3861

53. Electrical Field Gradient studies on La1-xCdxMnO3+d system J.P. Araújo, A.M.L. Lopes, T. M. Mendonça, E. Rita, J.G. Correia, V.S. Amaral Hyperfine Interaction 158 (2005) 347-351

54. Relaxation phenomena in current induced switching in thin magnetic tunnel junctions J. Ventura, J.P. Araújo, F. Carpinteiro, J.B. Sousa, Y. Liu, Z. Zhang, P.P. Freitas Journal of Magnetism and Magnetic Materials, 290-291 (2005) 1067

55. Charge-ordering contribution to the magnetic entropy change of (Pr,Ca)MnO3 manganites M.S. Reis, A.M. Gomes, J.P. Araújo, J.S. Amaral, P.B. Tavares, I.S. Oliveira, V.S. Amaral Journal of Magnetism and Magnetic Materials, 290-291 (2005) 697

56. Magnetic Entropy change of (Pr,Ca)MnO3 manganites 0.20 x 0.95 M.S. Reis, V.S. Amaral, J.P. Araújo, P.B. Tavares, A.M. Gomes, A.M. Gomes, I.S. Oliveira Phyiscal Review B 71 (2005) 144413

57. Multi-step and anomalous reproducible behaviour of the electrical resistivity near the first-order magnetostructural transition of Gd5(Si0.1Ge0.9)4 J.B. Sousa, A.M. Pereira, F.C. Correia, J.M. Teixeira, J.P. Araújo, R.P. Pinto, M.E. Braga, L. Morellon, P.A. Algarabel, C. Magen, M. R. Ibarra Journal of Physics: Condensed Matter 17 (2005) 2461

58. Thermopower and electrical resistivity behavior near the martensitic transition in Gd5(SixGe1-x)4 magnetocaloric compounds R.P. Pinto, J.B. Sousa, F.C. Correia, J.P. Araújo, M.E. Braga, A.M. Pereira, L. Morellon, P.A. Algarabel, C. Magen and M.R. Ibarra Journal of Magnetism and Magnetic Materials 290-291 (2005) 661

59. Magnetocaloric effect in Er- and Eu-substituted ferromagnetic La-Sr manganites J.S. Amaral, M.S. Reis, V.S. Amaral, T.M. Mendonça, J.P. Araújo, M.A. Sá, P.B. Tavares, J.M. Vieira Journal of Magnetism and Magnetic Materials, 290-291 (2005) 686

60. Magnetic tuning of tunnel conductivity Y. Pogorelov, J.B. Sousa, J.P. Araújo Applied Physics Letters 87 (2005) 1

61. Atomic ordering of the fluorine dopant in the HgBa2CuO4+? high-Tc superconductor J.G. Correia, H. Haas, V. S. Amaral, A.M.L. Lopes, J.P. Arau?jo, S. Le Floch, P. Bordet, E. Rita, J.C. Soares W. Tro?ger Physical Review B 72 (2005) 1

62. Percolative transition on ferromagnetic insulator manganites: Uncorrelated to correlated polaron clusters A. M. L. Lopes, J. P. Araújo, J. J. Ramasco, V. S. Amaral, R. Suryanarayanan, and J. G. Correia Phys. Rev. B (Rapid Comm.) 73 (2006) 100408

63. Domain imaging, MOKE and magnetoresistance studies of CoFeB films for MRAM applications J.M. Teixeira, R.F. A. Silva, J. Ventura, A.M. Pereira, F. Carpinteiro, J.P. Araujo, J.B. Sousa, S: Cardoso, R. Ferreira, P.P. Freitas Materials Science and Engineering B 126 (2006) 180

64. Nanoscopic origin of current-induced switching in thin tunnel junctions J. Ventura, J.P. Araujo, J.B. Sousa, Y. Liu, Z. Zhang, P.P. Freitas IEEE Transactions on Nanotechnology 5 (2006) 142

65. Cd-doped LaMnO3 manganites prepared by the sol-gel technique A.M.L. Lopes, J.P. Araujo, A.M. Gomes, T.M. Mendonca, P.B. Tavares,J.G. Correia, V.S. Amaral MATERIALS SCIENCE FORUM, 514-516 (2006) 289

66. Local probe studies on oxides using radioactive Isotopes J.P. Araujo, A.M.L. Lopes, E. Rita, J.G. Correia, V.S. Amaral, U.Wahl and the ISOLDE Collaboration MATERIALS SCIENCE FORUM, 514-516, (2006) 1593

67. Magnetic characterization of MnPt/CoFe bilayers using the MOKE technique J.M. Teixeira, A. M. Pereira, J. Ventura, R.F.A. Silva, F. Carpinteiro, J.P. Araujo, J.B. Sousa, M. Rickart, S. Cardoso, R. Ferreira and P. P. Freitas, Accepted in Vacuum.

68. Thermopower in Specular Spin Valves A. M. Pereira, J. M. Teixeira, F. Carpinteiro, J. P. Araujo, R. P. Pinto, M.E. Braga, J. B. Sousa, A. Veloso and P. P. Freitas J. Alloys and Compounds 423 (2006) 240

69. Electromigration-driven resistance switching in non-magnetic tunnel junctions J. Ventura, A. M. Pereira, J. M. Teixeira, F. Carpinteiro, J. P. Araujo, J. B. Sousa, Y. Liu, Z. Zhang and P. P. Freitas J. Alloys and Compounds 423 (2006) 181

70. Transport and magnetic properties of the Er5Si4 compound A.M. Pereira, J.P. Araujo, M.E. Braga, R.P. Pinto, J. Ventura, F.C. Correia, J.M. Teixeira, J.B. Sousa C. Magen, P.A. Algarabel, L. Morellon, M.R. Ibarra J. Alloys and Compounds 423 (2006) 66

71. Heat generation in tunnel junctions for current-written pinned layer switching J. Ventura, A. Pereira, J. M. Teixeira, J. P. Araujo, F. Carpinteiro, J. B. Sousa, Y. Liu, Z. Zhang and P. P. Freitas MATERIALS SCIENCE FORUM, 514-516 (2006) 323

72. Short-range effects and magnetization reversal in Co80Fe20 thin films: a MOKE magnetometry/domain imaging and AMR study J. M. Teixeira, R. F. A. Silva, J. Ventura, A. Pereira, J. P. Araujo, M. Amado, F. Carpinteiro, J. B. Sousa, S. Cardoso, R. Ferreira and P. Freitas MATERIALS SCIENCE FORUM, 514-516 (2006) 1145

73. Ferromagnetic-paramagnetic/mictomagnetic transitions in Fe rich Fe1-xAlx alloys. A magnetoresistivity study. M. M. Amado, M. E. Braga, D. Schmool, A. M. Pereira, J. M. Moreira, J.P. Araújo, J. B. Sousa, J. S. Garitaonandia, F. Plazaola Journal Alloys and Compounds 423 (2006) 84.

74. Tuning of magnetocaloric effect in ferromagnetic La-Sr manganites through Er and Eu doping J.S. Amaral, M.S. Reis, V.S. Amaral, T.M. Mendonca, J.P. Araujo, P.B. Tavares, J.M. Vieira MATERIALS SCIENCE FORUM, 514-516 (2006) 299

75. Preparation and properties of new superconductor material MgB2 D. Marinha, F.J. Oliveira, M.S. Reis, F.M. Costa, M.F. Carrasco, J.P. Araujo, J.B. Sousa, J.M. Vieira, V.S. Amaral MATERIALS SCIENCE FORUM, 514-516 (2006) 333

76. Observation of a Griffiths-like phase in magnetocaloric compound Tb5Si2Ge2 C. Magen, P. A. Algarabel, L. Morellon, J.P. Araujo, C. Ritter, M. R. Ibarra, A. M. Pereira and J. B. Sousa Phys. Rev. Lett. 96 (2006) 167201

77. Lattice site location and annealing behavior of implanted Ca and Sr in GaN B. De Vries, A. Vantomme, U. Wahl, J.G. Correia, J.P. Araujo, W. Lojkowski, D. Kolesnikov Journal of Apllied Physics, 100 (2006) 023531

78. Spin reorientation transition and exotic magnetism in dilute Gd1-xYx single crystals (x < 0.1) revealed by a.c. magnetoresistance studies J.A.M. Santos, J.B. Sousa, J.P.Araújo, F. Correia, J.F.Collingwood, S.B.Palmer, Materials Science Forum,514-516 (2006) 309

79. Fe and Cu in Si: Lattice sites and trapping at implantation-related defects U. Wahl, J.G. Correia, E. Rita, J.P. Araújo, J.C. Soares Nuclear Instruments and Methods in Physics Research B 253(2006) 167

80. Transport properties of low resistance underoxidized magnetic tunnel junctions J. Ventura, R. Ferreira, J. M. Teixeira, J. P. Araujo, Y. Pogorelov, J. B. Sousa and P. P. Freitas IEEE Transactions on Magnetics, 43 (2007) 2815

81. Competing spin-dependent conductance channels in under-oxidized tunnel junctions J. Ventura, R. Ferreira, J. P. Araujo, J. B. Sousa and P. P. Freitas Applied Physics Letters 90 (2007) 032501

82. Nanogranular BaTiO3-CoFe2O4 thin films deposited by pulsed laser ablation J.Barbosa, B.G.Almeida, J.A.Mendes, A.G.Rolo, J.P.Araújo and J.B.Sousa Journal of Applied Physics 101 (2007) 09M101

83. Distribution of blocking temperatures in nano oxide layers of specular spin valves J. Ventura, J. P. Araujo, J. B. Sousa, A. Veloso and P. P. Freitas Journal of Applied Physics 101 (2007) 113901

84. Amphoteric arsenic in GaN U. Wahl, J. G. Correia, J. P. Araújo, E. Rita, J. C. Soares Appl. Phys. Lett. 90 (2007) 181934

85. Temperature dependence of transport properties and exchange bias in MnNi based spin valves J. M. Teixeira, J. Ventura, B. Negulescu, J. P. Araujo, R. Fermento, J. B. Sousa and P. P. Freitas accepted in Journal of Magnetism and Magnetic Materials

86. Spin Dependent Migration-conduction Model for Ultrathin Magnetic Tunnel Junctions Yu.G. Pogorelov, J.V. Lopes, J.O. Ventura, P.P. Freitas, R. Ferreira, J.P.Araújo and J.B. Sousa Accepted in Journal of Magnetism and Magnetic Materials

87. Transport properties of low coupling field spin valves: dependencies on spacer thickness, deposition rate and temperature J.M. Teixeira, J. Ventura, R. Fermento, J. P. Araújo, J. B. Sousa, S. Cardoso and P. P. Freitas accepted in IEEE Trans. Magn.

88. Effect of Rare Earth ion in the Thermopower of R5(SixGe1-x)4 Compounds with x~0.5 and R=Gd and Tb A.M. Pereira, C. Magen, J.P. Araujo, P.A. Algarabel , L. Morellon, M.E. Braga, R.P. Pinto, M.R. Ibarra, J.B. Sousa Accepted in J. Mag. Mag. Mat.

89. Asymmetric Electromigration-Driven Resistive Switching In Tunnel Junctions J. Ventura, J. P.Araujo, F. Carpinteiro, J.B. Sousa, M. Rickart, Z. Zhang, Y. Liu and P. P. Freitas submitted to Mat. Sci. Forum.

90. Structural characterization of MnNi and MnPt antiferromagnetic materials for spintronic applications J. Ventura, J.M. Teixeira, J.P. Araujo, J.B. Sousa, V. Amaral, B. Negulescu, M. Rickart and P. P. Freitas submitted to Mat. Sci. Forum.

91. Transport and Magnetism in Nd5Si1.45Ge2.55 A.M.Pereira, J.P.Araújo, C.Magen, M.E.Braga, J.R.Peixoto, J.Ventura, R.P.Pinto, P.A.Algarabel, F.Carpinteiro, L.Morellon, R.M.Ibarra, J.B.Sousa submitted to Materials Science Forum

92. Magnetic Field Enhancement with soft Magnetic Flux Guides D.C. Leitão , I.G. Trindade, R.Fermento, J.P.Araújo, S. Cardoso, P.P. Freitas and J.B. Sousa Submitted to Materials Science Forum

93. Thermoelectrical Power in Gd1-xYx single crystals with low Y content (0<0.125) J.M. Moreira, M.E. Braga, A.M. Pereira, R.P. Pinto, J.M. Santos, F. Carpinteiro, J.P. Araújo, J.F. Collingwood, S.B. Palmer, J.B. Sousa Submitted to Materials Science Forum

94. Three-state memory combining resistive and magnetic switching using tunnel junctions J. Ventura, A. M. Pereira, J. P. Araújo, J. B. Sousa, Y. Liu, Z. Zhang and P. P. Freitas submitted to J. Phys. D: Appl. Phys.

Communications

Oral communications by invitation

1.Magnetoresistência Gigante em Materiais Magnéticos Multicamada, Nano-estruturados e Cerâmicas. J. B. Sousa, V. S. Amaral, M. S. Rogalski, M. E. Braga, J. A. Mendes, B. G. Almeida, M. M. P. de Azevedo, A. L. Guimarães, J. P. Araújo 10ª Conferência Nacional de Física, Física 96, Faro, 1996

2.Studies of High-Tc Superconductors with Radioactive Ion Beams J.G. Correia, J.P. Araújo and the IS360 collaboration, OECD/NEA Workshop on Ion and Slow Positron Beam, Costa da Caparica, Portugal, 1998, Comunicação oral convidada.

3.Electron-Gamma PAC: New Possibilities for NQI Studies J.G. Correia, J.P. Araújo, J.G. Marques , A.R. Ramos, A.A. Melo, J.C. Soares International Symposium on Nuclear Quadrupole Interactions; Leipzig, Alemanha, 1999

4.Non-linear Conductivity in LaCaMnO3 Thin Film: Interface and Current Distribution Effects. V. S. Amaral, J. P. Araújo, A. A. C. S. Lourenço, P. B. Tavares, J. B. Sousa, J. M. Vieira Invited Oral Communication: Oxide Spin Electronics Network Progress Meeting- Barcelona, Espanha (1999)

5.Anisotropic Transport Properties of Epitaxial La2/3Ca1/3MnO3 Thin Films with Different Growth Orientations V. S. Amaral, A. A. C. S. Lourenço, J. P. Araújo, P. B. Tavares, E. Alves, J. B. Sousa, J. M. Vieira, M. F. da Silva and J. C. Soares. Invited Oral Communication na European Material Conference-EMRS 1999 Spring Meeting, Simpósio G : Material Physics Issues and Applications of Magnetic Oxides Strasbourg, França (1999)

6.Anomalous Magnetic Behaviour In La2/3Ca1/3MnO3 Near The Critical Point: Stable Clusters V. S. Amaral, J. P. Araújo, Yu. G. Pogorelov, J. M. B. Lopes dos Santos, P. B. Tavares, A. A. C. S. Lourenço, J. B. Sousa, J. M. Vieira, P. A. Algarabel Invited Oral Communication: Oxide Spin Electronics Network Progress Meeting- Groningen, Holanda (1999)

7.Electromigration-driven resistance switching in magnetic tunnel junctions, J. Ventura, J. Teixeira, J. P. Araujo, J. B. Sousa, Y. Liu, Z. Zhang and P. P. Freitas, EMRS Strabourg (2005)

Outras comunicações orais / Other oral communications

8.Dopagem de Filmes Finos Supercondutores YBa2Cu3O7 por Implantação Iónica de 197Hg.Estudo de Propriedades Físicas Durante o Decaimento Radioactivo J.G. Correia, V.S. Amaral, A.A.C.S. Lourenço, J.G. Marques, J.A. Mendes, M.A.V. Baptista, J.P. Araújo, J.M. Moreira, J.B. Sousa, E. Alves, M.F. da Silva, J.C. Soares 10ª Conferência Nacional de Física, Física 96, Faro, Portugal, 1996, comunicação oral

9.Magnetoresistência Gigante em Materiais Magnéticos Multicamada, Nano estruturados e Cerâmicas J.B. Sousa, V.S. Amaral, M.S. Rogalski, M.E. Braga, J.A. Mendes, B.G. Almeida, M.M.P. de Azevedo, A.L. Guimarães, J.P. Araújo 10ª Conferência Nacional de Física, Física 96, Faro, Portugal, 1996, comunicação oral

10.Anomalous Low-Field Magnetization in La2/3Ca1/3MnO3 near Critical Point J.P. Araújo, Yu.G. Pogorelov, V.S. Amaral, J.B. Sousa, P.B. Tavares, J.M. Vieira NATO ASI “Frontiers in Magnetism of Reduced Dimension Systems”, Crimea, Ukraine, 1997, comunicação oral

11.Anisotropia da resistividade eléctrica e da magnetoresistência de filmes finos La0.67Ca0.33MnO3 em substratos (110) e (100) SrTiO3 V.S. Amaral, A.A.C.S. Lourenço, J.P. Araújo, P.B Tavares, E. Alves, J.M. Vieira, J.B. Sousa, M.F. da Silva, J.C. Soares 11o conferência nacional de Física, Fisica98, Maia, Portugal, 1998, comunicação oral

12.Development of magnetoresistive shielded heads simulation techniques using conformal mapping M.A.V. Baptista, J.P. Araújo, J.B. Sousa, P.P. Freitas European Material Conference-EMRS 1999 Spring Meeting, Simpósio C: Computer Material Science Physics, França,1999, Comunicação oral

13.Local Oxygen Probing in the HgBa2CuO4+d high-TC Superconductor J.G. Correia, J.P. Araújo, S.M. Loureiro, P. Toulemonde, S. Le Floch, P. Bordet, J.J. Capponi, R. Gatt, W. Tröger, B. Ctortecka, T. Butz, H. Haas, J.G. Marques, J.C. Soares Material Research Society 1999 Fall Meeting, Boston, Massachusetts, EUA , 1999, contribuição oral

14.Magnetic phases FeCo-Ag granular thin films studied by Mössbauer spectroscopy M.M. Amado, M.S. Rogalski, A.M.L. Lopes, J.P. Araújo, M.M. Pereira de Azevedo, M. Alegria Feio, A.F. Kravets, A.Ya. Vovk, G. Kazakei, J.B. Sousa 12ª Conferência Nacional de Física, Física 2000, Figueira da Foz , Portugal, 2000, contribuição oral 15.Condutividade Não-Linear em Filmes Finos LaCaMnO3 Thin Films: Efeito Túnel em Interfaces V.S. Amaral, J.P. Araújo, A.A.C.S. Lourenço, P.B. Tavares, Yu.G. Pogorelov, J.B. Sousa, J.M. Vieira 12ª Conferência Nacional de Física, Figueira da Foz , 2000, contribuição oral

16.Lattice location studies of Pr in GaN U. Wahl, A. Vantomme, G. Langouche, J.P. Araújo, L. Peralta, J.G. Correia 2000 Spring Meeting of the European Materials Research Society (E-MRS): “Rare Earth Doped Semiconductors”, Strasbourg, France, 2000, contribuição oral

17.111mCd PAC studies on La-Cd-MnO3 CMR Manganites J.P. Araújo, J.G. Correia, V.S. Amaral, P.B. Tavares, F. Lencart-Silva, AA.C.S. Lourenço, J.B. Sousa, J.M. Vieira. Nuclear Methods in Magnetism NMM2000, Rio de Janeiro, Brasil, 2000, contribuição oral

17.Discontinous Transition Effects in Manganites: Magnetization Study in the Paramagnetic Phase V.S. Amaral, J.P. Araújo, Yu.G. Pogorelov, J.B. Sousa, P.B. Tavares, J.M. Vieira 1st joint European Magnetic Symposia (JEMS-01), Grenoble, França, 2001, contribuição oral. 18.204mPb as a probe for Perturbed Angular Correlations W. Tröger, M. Dietrich, H. Haas, J.P. Araújo, J.G. Correia XVI International Conference on Nuclear Quadrupole Interactions, Hiroshima, 2001, contribuição oral. 19.80mBr/80Br- A new Electron-gamma PAC probe J.G. Correia, H. Haas, J.P. Araújo, J.G. Marques, J.C. Soares, A.A. Melo 12th International Conference on Hyperfine Interactions, Utah, USA, 2001, contribuição oral

20.Lattice Site Location Studies of Rare-Earths Implanted in ZnO Single-Crystals E. M.C. Rita, U. Wahl, A.L. Lopes, J. P. Araújo , J. G. Correia, E. Alves, J. C. Soares MRS Fall Meeting, Boston, EUA, 2002, contribuição oral

21.Lattice site and stability of implanted Ag in ZnO E. Rita, U. Wahl, A.M.L. Lopes, J.P. Araújo, J.G. Correia, E. Alves, J.C. Soares ICDS, Tampa, EUA, 2002, contribuição oral.

22.Tricitical points in La-Based Ferromagnetic manganites V. S. Amaral, J. P. Araújo, Yu. G. Pogorelov, P. B. Tavares, J. B. Sousa, J. M. Vieira 47th conference on Magnetism and Magnetic Materials (MMM-02), Tampa, EUA, 2002, contribuição oral.

23.Influence of charge-ordering on the magnetocaloric effect of (Pr,Ca)MnO3 manganites M. S. Reis, A.M. Gomes, I.S. Oliveira, V.S. Amaral, J. P. Araújo, P.B. Tavares XXVI ENCONTRO NACIONAL DE FISICA DA MATÉRIA CONDENSADA Caxabum, Brazil (2003)

24.Magnetocaloric Effect in Manganites: Ferromagnetic and Charge-Ordering Effects M. S. Reis, A. M. Gomes, J. P. Araújo, P. B. Tavares, J. S. Amaral, I. S. Oliveira, V. S. Amaral II International Materials Symposium e XI Encontro da SPM, Materiais 2003, Costa da Caparica, (2003)

25.Charge-Ordering and Magnetoelastic Coupling Effects on the Magnetocaloric Properties of Manganites M. S. Reis, A.M. Gomes, J.P. Araújo, P.B. Tavares, J. S. Amaral, I. S. Oliveira, V.S. Amaral European Materials Research Society 2003 Fall Meeting: Symposium D: Colossal Magnetoresistance - New Materials And New Ideas, Varsóvia, Polónia (2003)

26.Local Probe Studies of high-Tc Superconductors and CMR Oxides Using Radioactives Isotopes J.P. Araújo, V.S. Amaral, A. M. L. Lopes, E. Rita, J. G. Correia, U. Wahl, P.B. Tavares and the ISOLDE Collaboration European Materials Research Society 2003 Fall Meeting: Symposium D: Colossal Magnetoresistance - New Materials And New Ideas, Varsóvia, Polónia (2003)

27.Magnetocaloric Effect In Manganites J. S. Amaral , M.S. Reis, J.P. Araújo, P.B. Tavares, A. M. Gomes, I. S. Oliveira, V.S. Amaral 10th Workshop on Magnetism and Intermetallics, Lisboa (2003)

28.Non Extensive Statistics In Magnetic Systems M. S. Reis and V. S. Amaral,J. P. Araújo,I. S. Oliveira 10th Workshop on Magnetism and Intermetallics, Lisboa, (2003

29.Magnetic Non-extensivity on CMR Manganites M. S. Reis, V. S. Amaral, J. P. Araújo, I. S. Oliveira European Materials Research Society 2003 Fall Meeting: Symposium D: Colossal Magnetoresistance - New Materials And New Ideas, Varsóvia, Polónia (2003)

30.Ion beam studies of single crystalline manganite thin films C.Marques, E. Alves, V. S. Amaral, J.M.Vieira, J.P. Araújo, H.-U. Habermeier Ion Beam Analysis, Albuquerque, USA (2003)

31.Magnetic Non-Extensivity on CMR Manganites M. S. Reis, I. S. Oliveira, J. P. Araújo, V. S. Amaral XXVI Encontro de Física da Materia Condensada, Cachambu, Brasil, Gr: 03E, Comm. 327 (2003)

32.Magnetic Non-Extensivity on CMR Manganites M. S. Reis, I. S. Oliveira, J. P. Araújo, V. S. Amaral XXVI Encontro de Física da Materia Condensada, Cachambu, Brasil, Gr: 03E, Comm. 327 (2003)

33.Magnetocaloric effect in manganites: ferromagnetism and charge-ordering effects M.S. Reis, A.M. Gomes, J.P. Araújo, P.B. Tavares, J. S. Amaral, I. S. Oliveira, V.S. Amaral Materials 2003, Costa da Caparica, Portugal, (2003)

34.Non Extensive Statistics in Magnetic Systems M.S.Reis, V.S.Amaral, J.P.Araújo, I.S.Oliveira 10th Workshop on Magnetism and Intermetallics

35.Can Magnetic inhomogeneity be described with non-extensive thermodynamics? M. S. Reis, V. S. Amaral, J. P. Araújo, I. S. Oliveira Joint European Magnetic Symposia JEMS’04,Dresden, Alemanha

36.Charge-ordering contribution to the magnetic entropy change of (Pr,Ca)MnO3 manganites M. S. Reis, A. M. Gomes, J. P. Araújo, P.B. Tavares, J.S. Amaral, I. S. Oliveira, V. S. Amaral, Joint European Magnetic Symposia JEMS’04,Dresden, Alemanha

37.Local probe studies near the charge-order transition in Pr0.65Ca0.35MnO3 A.M.L.Lopes, J.P. Araújo, E. Rita, J.G. Correia, V.S. Amaral; R. Suryanarayanan and the ISOLDE Colaboration Joint European Magnetic Symposia JEMS’04,Dresden, Alemanha

38.Local probe studies on Pr1-xCaxMnO3 system: magnetic and charge-order effects A.M.L.Lopes, J.P. Araújo, E. Rita, J.G. Correia, V.S. Amaral, T.M. Mendonça, P. B. Tavares, Y. Tomioka, Y. Tokura and the ISOLDE Colaboration Joint Hyperfine Interaction 2004 and NuclearQuadrupole Interactions, 2004, Bona, 2004 39.Can Magnetic inhomogeneity be described with non-extensive thermodynamics? M. S. Reis, J. P. Araújo, V. S. Amaral, I. S. Oliveira 31st INTERNACIONAL WORKSHOP ON COMPLEXITY, METASTABILITY AND NONEXTENSIVITY Erice, Italia (2004)

40.Electromigration-driven resistance switching in magnetic and non-magnetic tunnel junctions J. Ventura, J. Teixeira, J. P. Araujo, J. B. Sousa, Y. Liu, Z. Zhang and P. P. Freitas EMRS 2005, Fall meeting, Varsóvia, Polónia (5-9 de Set. 2005). 41.Magnetization reversal in CoFe thin films for spintronics: a moke magnetometry, domain imaging and AMR study, J. M. Teixeira, R. F. A. Silva, J. Ventura, J. P. Araújo, M. M. Amado, F. Carpinteiro, J. B. Sousa, S. Cardoso, R. Ferreira and P. P. Freitas, Materials 2005, Aveiro, 2005

42.Transport properties in the pseudobinary Er5Si4 compound, J. P. Araújo, A. M. Pereira, J. M. Teixeira, F. C. Correia, M. E. Braga, R. P. Pinto and J. B. Sousa, C. Magen, L. Morellon, P. A. Algarabel and M. R. Ibarra, EMRS 2005, Fall meeting, Varsóvia, Polónia (5-9 de Set. 2005)

43. Local probe studies on oxides using radioactive Isotopes V.S. Amaral , J.P. Araújo, A.M.L. Lopes, E. Rita, J.G. Correia, , U. Wahl, ISOLDE Collaboration Materials-2005, Aveiro, Portugal, 2005

44. Local Probe Studies of high-Tc Superconductors and CMR Oxides Using Radioactives Isotopes. V.S. Amaral, J.P. Araújo, A. M. L. Lopes, E. Rita, J. G. Correia, U. Wahl, P.B. Tavares and the ISOLDE CollaborationEuropean Materials Research Society 2003 Fall Meeting: Symposium D: Colossal Magnetoresistance - New Materials And New Ideas, Warsaw, Poland, 2003

120. Magnetization reversal in CoFe thin films for spintronics: a MOKE magnetometry, domain imaging and AMR study, J. M. Teixeira, R. F. A. Silva, J. Ventura, J. P. Araújo, F. Carpinteiro, J. B. Sousa, S. Cardoso, R. Ferreira and P. P. Freitas, Materiais 2005, Aveiro, Portugal

121. Electromigration-driven resistance switching in magnetic and non-magnetic tunnel junctions, J. Ventura, J. M. Teixeira, J. P. Araújo, A. Pereira, F. Carpinteiro, J. B. Sousa, Y. Liu, Z. Zhang and P. P. Freitas, EMRS 2005 Fall Meeting, Warsaw, Poland,(2005.)

122. Transport properties in the pseudobinary Er5Si4 compound, J. P. Araújo, A. M. Pereira, J. M. Teixeira, F. C. Correia, M. E. Braga, R. P. Pinto and J. B. Sousa, C. Magen, L. Morellon, P. A. Algarabel and M. R. Ibarra, EMRS 2005 Fall Meeting, Warsaw, Poland, September 5-9, 2005.

123. Magnetic characterization of nanostructures for spintronics using the MOKE technique, J. M. Teixeira, R. F. A. Silva, J. Ventura, A. M. Pereira, J. P. Araújo, F. Carpinteiro and J. B. Sousa, RIVA - 5th Iberian Vacuum Meeting, Guimarães, Portugal (2005.)

124. Transport, magnetic and structural properties of nanostratified Gd5(SixGe1-x)4 magnetocaloric compounds, A.M. Pereira, J.P. Araújo, R.P.Pinto, M.E. Braga, J. M. Teixeira, J. Ventura, F.C. Correia, J.B. Sousa, C. Magen and P. A. Algarabel, RIVA - 5th Iberian Vacuum Meeting, Guimarães, Portugal, (2005.)

133. Magnetocaloric Effect in Manganites, J. S. Amaral , M.S. Reis, J.P. Araujo, P. B. Tavares, A. M. Gomes, I. S. Oliveira, V. S. Amaral 10th Workshop on Magnetism and Intermetallics, Centro de Fisica da Materia Condensada, Universidade de Lisboa (11 a 12 de Dezembro 2003).

133. Development of manganite materials for room temperature magneto-caloric applications, J. S. Amaral, M. S. Reis, J. P. Araujo, P. B. Tavares, V.S. Amaral First International Conference on Magnetic Refri geration at Room Temperature, Montreaux, Suica, de 2005.

Posters in conferences.

 

45.Critical Behavior of Magnetoresistivity in La2/3Ca1/3MnO3 J.B. Sousa, V.S. Amaral, Yu.G. Pogorelov, A.L. Guimarães, J.P. Araújo, M.E. Braga, J.A. Mendes, M.R. Ibarra, P. Algarabel, J. Blasco, J. García, C. Marquina, A. del Moral, J.M. de Teresa 41th Annual Conference on Magnetism and Magnetic Materials, MMM, Atlanta, EUA, 1996, poster

46.Transição Metal-isolador e Magnetoresistência Colossal em Cerâmicas La Y Ca MnO3 V.S. Amaral, J.P. Araújo, P.B. Tavares, A.A.C.S. Lourenço, J.B. Sousa, J M. Vieira 10ª Conferência Nacional de Física, Física 96, Faro, Portugal, poster

47.Filmes Finos com Magnetoresistência Colossal Preparados por Vaporização Laser A.A.C.S. Lourenço, J.P. Araújo, V.S. Amaral, P.B. Tavares , J.B. Sousa, J.M. Vieira 10ª Conferência Nacional de Física, Física 96, Faro, Portugal, 1996, poster

48.Physical Studies on YBCO Thin Film Superconductors during the Decay of Implanted Radioactive Ions J.G. Correia, V.S. Amaral, A.A.C.S. Lourenço, J.G. Marques, J.A. Mendes, M.A.V. Baptista, J.P. Araújo, J.M. Moreira, J.B. Sousa, E. Alves, M.F. da Silva, J.C. Soares International Workhop on Ion Beam Materials Modification and Characterization, Lisboa, Portugal, 1996, poster

49.Physical Studies on YBCO Thin Film Superconductors during the Decay of Implanted Radioactive Ions J.G. Correia, V.S. Amaral, A.A.C.S. Lourenço, J.G. Marques, J.A. Mendes, M.A.V. Baptista, J.P. Araújo, J.M. Moreira, J.B. Sousa, E. Alves, M.F. da Silva, J.C. Soares International Workhop on Ion Beam Materials Modification and Characterization, Lisboa, Portugal, 1996, poster

50.Microscopic Studies of Radioactive Hg Implanted in YBa2Cu3O7 Superconducting Thin Films V.S. Amaral, J.G. Correia, A.A.C.S. Lourenço, J.G. Marques, J.A. Mendes, M.A.V. Baptista, J.P. Araújo, J.M. Moreira, J.B. Sousa, E. Alves, M.F. da Silva, J.C. Soares International Conference on Magnetism, Cairns, Australia, 1997, poster

51.Deposition of Magnetoresistive La1-xCaxMnO3 Thin Films by Aerosol Assisted MOCVD P.B. Tavares, J.P. Araújo, V.S. Amaral, J.B. Sousa, J.M. Vieira European Ceramics Research Society Conference, Versailles, França, 1997, poster

52.Giant Magnetoresistance in La1-xCaxMnO3 Ceramics and Thin Films J.P. Araújo, P.B. Tavares, V.S. Amaral, A.A.C.S. Lourenço, J.B. Sousa, J.M. Vieira European Ceramics Research Society Conference, Versailles, França, 1997, poster

53.Room Temperature Tc of La-Ca -MnO3 MOCVD Thin Films with Mn Excess P.B. Tavares, V.S. Amaral, J.P. Araújo, A.A.C.S. Lourenço, J.M. Vieira, J.B. Sousa Magnetism and Magnetic Materials Conference , Miami, USA, 1998, poster

54.Filmes Finos Supercondutores de BiSrCaCuO por Aerossol-MOCVD P.B. Tavares, J.P. Araújo, V.S. Amaral, J.B. Sousa, J.M. Vieira 11o conferência nacional de Física, Fisica98, Maia, Portugal, 1998, poster

55.Lattice Site and Stability and diffusion of Hg implanted YBCO thin films J.P. Araújo, J.G. Correia, U. Wahl, J.G. Marques, E. Alves, V.S. Amaral, A.A.C.S. Lourenço, V. Galindo, T. von Papen, J.P. Senateur, F. Weiss, A. Vantomme, G. Langouche, A.A. Melo, M.F. da Silva, J.C. Soares, J.B. Sousa 11o conferência nacional de Física, Fisica98, Maia, Portugal, 1998, poster

56.Studies of the local symmetry of the O(2)-Hg-O(2) chain at low temperature J.G. Correia, J.P. Araújo, P. Toulemonde, J.G. Marques, S. Lefloch, P. Bordet, J.J. Capponi, S. Loureiro, B. Cortekca, W. Troger, T. Butz, A.A. Melo, J.C. Soares 11o conferência nacional de Física, Fisica98, Maia, Portugal, 1998, poster

57.Application Of Conformal Mapping to the Simulation of magnetic Microdevices M.A.V. Baptista, J.P. Araújo, J.B. Sousa, P.P. Freitas 11o conferência nacional de Física, Fisica98, Maia, Portugal, 1998, poster

58.Comportamento Magnético de Manganites La1-xCaxMnO3 na Vizinhança duma Transição Estrutural V.S. Amaral, P.B. Tavares, M.A. Sá, J.P. Araújo, A.A.C.S. Lourenço, J.M. Vieira, J.B. Sousa 11ª conferência nacional de Física, Fisica98, Maia, Portugal, 1998, poster

59.Optimização de filmes finos de manganite La-Ca-MnO3 com magnetoresistência colossal preparados por MOCVD P.B Tavares, V.S Amaral, J.P. Araújo, A.A.C.S. Lourenço, J.M. Vieira, J.B. Sousa 11o conferência nacional de Física, Fisica98, Maia, Portugal, 1998, poster

60.Deposition of La-Ca-MnO3 Thin Films Using Aerosol-assisted MOCVD.Substrate and Annealing Effects P.B Tavares, V.S. Amaral, J.P. Araújo, A.A.C.S. Lourenço, J.M. Vieira, J.B. Sousa Magnetic Materials and Applications Conference (EMMA98), Saragossa, Espanha, 1998, poster

61. Properties of Epitaxial LaCaMnO3 Laser Ablated Thin Films on (100) and (110) SrTiO3 Substrates, A.A.C.S. Lourenço, J.P. Araújo, V.S. Amaral, P.B Tavares, J.B. Sousa, J.M. Vieira, E. Alves, M.F. da Silva, J.C. Soares European Magnetic Materials and Applications Conference (EMMA98), Saragoza, Espanha, 1998, poster

62.Stability and Diffusion of Hg Implanted YBa2Cu3O6+x J.P. Araújo, J.G. Correia, U. Wahl, J.G. Marques, E. Alves, V.S. Amaral, A.A.C.S. Lourenço, V. Galindo, T. von Papen, J.P. Senateur, F. Weiss, A. Vantomme, G. Langouche, A.A. Melo, M.F. da Silva, J.C.Soares, J.B.Sousa Ion Beam Modification of Materials (IBMM98), Amesterdao, Holanda, 1998, poster

63.Stability Studies of Hg Implanted YBa2Cu3O6+x J.P. Araújo, J.G. Correia, U. Wahl, J.G. Marques, E. Alves, V.S. Amaral, A.A.C.S. Lourenço, V. Galindo, T. von Papen, J.P. Senateur, F. Weiss, A. Vantomme, G. Langouche, A.A. Melo, M.F. da Silva, J.C. Soares, J.B. Sousa, and the ISOLDE Collaboration European-Material Research Society International Conference (E-MRS), Estrasburgo, França, 1998, poster 64.Anomalous Low-Field Magnetization in La2/3Ca1/3MnO3 near the Critical Point V.S. Amaral, J.P. Araújo, Yu.G. Pogorelov, J.B. Sousa, P.B. Tavares, J.M. Vieira, A.A.C.S. Lourenço, P. Algarabel 7th Joint MMM-Intermag Conference, San Francisco, EUA, 1998, poster

65.Er-O clustering and its influence on the lattice sites of Er in Si U. Wahl, J.G. Correia, J.P. Araújo, A. Vantomme, G. Langouche, 20th International Conference on Defects in Semiconductors, Berkeley, California, EUA, 1999, poster

66.Anisotropic Electrical Transport in Epitaxial La2/3Ca1/3MnO3 Thin Films V.S. Amaral, A.A.C.S. Lourenço, J.P. Araújo, A.M. Pereira, J.B. Sousa, P.B. Tavares, J.M. Vieira, E. Alves, M.F. da Silva, J.C. Soares. 44th Annual Conference on Magnetism and Magnetic Materials, San José, California, EUA, 1999, poster

67.Preparation and Properties of La-Cd-MnO3 Ceramics and Thin films: Cd at Mn Site? J.P. Araújo, V.S. Amaral, P.B. Tavares, A.A.C.S. Lourenço, F. Lencart e Silva, E. Alves, J.B. Sousa, J.M. Vieira, Oxide Spin Electronics Network Progress Meeting- Groningen, Holanda, 1999, poster

68.Preparation and Properties of La-Cd-MnO3 Ceramics and Thin films: Cd at Mn Site? J.P. Araújo, V.S. Amaral, P.B. Tavares, A.A.C.S. Lourenço, F. Lencart e Silva, E. Alves, J.B. Sousa, J.M. Vieira, European Material Conference-EMRS 1999 Spring Meeting, Simpósio G : Material Physics Issues and Applications of Magnetic Oxides Strasbourg, França ,1999, poster

69.Magnetic phase study of FeCo-Ag granular thin films by Mössbauer spectroscopy M.M. Amado, M.S. Rogalski, A.M.L. Lopes, J.P. Araújo, M.M. Pereira de Azevedo, M. Alegria Feio, A.F. Kravets, A.Ya. Vovk, G. Kazakei, J.B. Sousa 12ª Conferência Nacional de Física, Física 2000, Figueira da Foz , Portugal, 2000, poster

70.Comportamento Magnético de La2/3Ca1/3MnO3 na Vizinhança do Ponto Crítico V.S. Amaral, J.P. Araújo, Yu.G. Pogorelov, P.B. Tavares, A.A.C.S. Lourenço, J.B. Sousa, J.M. Vieira 12ª Conferência Nacional de Física, Física 2000,Figueira da Foz, Portugal, 2000, poster

71.Emission channeling studies of implanted 167mEr in InP U. Wahl, A. Vantomme, G. Langouche, J.P. Araújo 12th International Conference on Ion Beam Modification of Materials, Porto Alegre, Brasil, 2000, poster

72.The effects of temperature on BiSrCaCuO thin films using aerosol assisted MOCVD” P.B. Tavares, J.P. Araújo, V.S. Amaral, J.B. Sousa, J.M. Vieira International conference on “Thin film deposition of oxide multilayers, industrial-Scale Processing”, Vilnius, Lituania, 2000, poster

73.Mossbauer spectroscopy study of (FeCo)-Ag granular thin Films M.M. Amado, M.S. Rogalski, A.M.L. Lopes, J.P. Araújo, G. Kazakei, A. Kravets, M. Alegria Feio, M.M. Pereira de Azevedo, J.B. Sousa International Conference on Magnetism ICM2000, Recife, Brasil, 2000, poster

74.Magnetic Phases in Gd1-xYx bulk single crystals and thin films J.P. Araújo, A.M. Pereira, J.A.M. dos Santos, M.A.V. Baptista, J.M. Moreira, V.S. Amaral, J.B. Sousa, S.B. Palmer International Conference on Magnetism ICM2000, Recife, Brasil, 2000, poster

75.Anomalous Magnetic Behaviour In La2/3Ca1/3MnO3 Near The Critical Point: Stable Clusters And Crossover To Uniform Ferromagnetism V.S. Amaral, J.P. Araújo, Yu.G. Pogorelov, J.M.B. Lopes dos Santos, P.B. Tavares, A.A.C.S. Lourenço, J.B. Sousa, J.M. Vieira International Conference on Magnetism ICM2000, Recife, Brasil, 2000, poster

76.Non-linear Conduction in LaCaMnO3 Thin Films: Temperature Dependent Interface Tunneling Effects V.S. Amaral, J.P. Araújo, A.A.C.S. Lourenço, P.B. Tavares, Yu.G. Pogorelov, J.B. Sousa, J.M. Vieira International Conference on Magnetism ICM2000, Recife, Brasil, 2000, poster

77.Properties of LaCdMnO ceramics and thin films J.P. Araújo, V.S. Amaral, P.B. Tavares, A.A.C.S. Lourenço, F. Lencart-Silva, E. Alves, J.B. Sousa, J.M. Vieira International Conference on Magnetism ICM2000, Recife, Brasil, 2000, poster

78.Doping manganites by La-site vacancies and Ca ions: bulk ceramics and thin films: interplay between structural, magnetic and transport properties J.P. Araújo, V.S. Amaral, P.B. Tavares, F. Lencart-Silva, A.A.C.S. Lourenço, J.B. Sousa, J.M. Vieira International Conference on Magnetism ICM2000, Recife, Brasil, 2000, poster

79.Local probing of Hg Neighboorhood in HgBa2CuO4+d J.G. Correia, J.P. Araújo, S.M. Loureiro, P. Toulemonde, S. Le Floch, P. Bordet, J.J. Capponi, R. Gatt, W. Tröger, B. Ctortecka, T. Butz, H. Haas, J.G. Marques, J.C. Soares M2SHTSC VI, “ 6th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors”, Houston, EUA , 2000, poster

80.Magnetic Phases in Gd1-xYx bulk single crystals and thin films J.P. Araújo, A.M. Pereira, J.A.M. dos Santos, M.A.V. Baptista, J.M. Moreira, V.S. Amaral, J.B. Sousa, S.B. Palmer XIX General Conference of the Condensed Matter Division of the EPS, Montreux, Suíça, 2000, poster

81.Doping manganites by La-site vacancies and Ca ions: interplay between structural, magnetic and transport properties J.P. Araújo, V.S. Amaral, P.B. Tavares, F. Lencart-Silva, A.A.C.S. Lourenço, J.B. Sousa, J.M. Vieira XIX General Conference of the Condensed Matter Division of the EPS, Montreux, Suíça 2000, poster

82.Erbium Implantation In Strontium Titanate J.P. Araújo, U. Wahl, E. Alves, T. Monteiro, J.G. Correia REI-Radiation Efects in Insulators, Lisbon, Portugal, 2001, poster

83.Substrate and composition effects on BSCCO thin films deposited by aerosol-MOCVD P.B. Tavares, V.S. Amaral, J.P. Araújo, M.C. Oliveira, J.M. Vieira Materials 2001, First International Materials Symposium, Coimbra, Portugal, 2001, poster

84.Complex magnetic phase behaviour of Gd-rich Gd-Y single crystal alloys J. Collingwood, J.A.M. Santos, J.P. Araújo, J.B. Sousa, J.M. Moreira, C.M. Lim, C Edwards, S.B. Palmer, D. Fort. 8th Joint MMM-Intermag Conference, San Antonio, Texas, EUA, 2001, poster

85.Impurity lattice location and defect recovery of implanted ZnO single crystals E.M.C.Rita, U.Wahl, A.M.L.Lopes, J.P.Araújo, J.G.Correia, E.Alves, J.C.Soares Second International Workshop on Zinc Oxide, Dayton, Tampa, EUA, 2002, poster.

86.Influence of charge ordering on the magnetocaloric effect of (Pr,Ca)MnO3 manganites M.S. Reis,V.S. Amaral, J.P. Araújo, P.B. Tavares, A.M. Gomes, A. Y. Takeuchi, I.S. Oliveira 47th conference on Magnetism and Magnetic Materials (MMM-02), Tampa, EUA, 2002, poster.

87.Tunneling effects on metal-manganite interface M.S. Reis, J.P. Araújo ,V.S. Amaral, M.A. Valente, P.B. Tavares, A. Y. Takeuchi, I.S. Oliveira 47th conference on Magnetism and Magnetic Materials (MMM-02), Tampa, EUA, 2002, poster.

88.As novas tecnologias no ensino da Física: fisica.online.pt P. Rodrigues, J.P. Araújo, M.M.P. Azevedo 13o conferência nacional de Física, Fisica02, Évora, Portugal, 2002, poster

89.Structural and Magnetic Study of Self- Doped La1-x-yCaxVacyMnO3 F. Figueiras , J.P. Araújo, V.S. Amaral, P.B. Tavares, J.B. Sousa, J.M. Vieira European Materials Research Society 2003 Fall Meeting: Symposium D: Colossal Magnetoresistance - New Materials And New Ideas, Varsóvia, Polónia (2003), poster

90.Probing local symmetry changes in LaMnO3.12 rhombohedric-orthorhombic phase transition A. M. L. Lopes, J.P. Araújo, E. Rita, J. G. Correia, V.S. Amaral, Y. Li, J. M. Vieira, R. Suryanarayanan and the ISOLDE Collaboration European Materials Research Society 2003 Fall Meeting: Symposium D: Colossal Magnetoresistance - New Materials And New Ideas, Varsóvia, Polónia (2003)

91.Perturbed Angular Correlation Study on LaMnO3+d: Structural and magnetic phase transitions A.M.L. Lopes, J.P. Araújo, E.Rita, J.G. Correia, V.S. Amaral, R. Suryanarayanan Conferência “Third conference on Magnetic and Superconducting Materials, MSM03”, 2003, Tunisia, poster

92.Magnetocaloric effect in manganites: ferromagnetism and charge-ordering effects M.S. Reis, A.M. Gomes, J.P. Araújo, P.B. Tavares, J. S. Amaral, I. S. Oliveira, V.S. Amaral International Conference on Magnetism, ICM03, 2003, poster

93.Magnetocaloric effect on Pr0.43Gd0.25Ca0.32MnO3 manganite A.M. Gomes, M.S. Reis, A.P. Guimarães, P.B. Tavares, J.P. Araújo, V. S. Amaral International Conference on Magnetism, ICM03, 2003, poster

94.Tunneling effects on metal-manganite interface M.S. Reis, M.A. Valente, P.B. Tavares, J.P. Araújo, I.S. Oliveira, V.S. Amaral International Conference on Magnetism, ICM03, 2003, poster

95.Positive and colossal magnetocaloric effect due to charge ordering in CMR manganites M.S. Reis, A.M. Gomes, J.P. Araújo, P.B. Tavares, I.S. Oliveira, V.S. Amaral International Conference on Magnetism, ICM03, 2003, poster

96.Magnetic nonextensivity in CMR manganites M.S. Reis, J.P. Araújo, V.S. Amaral, I.S. Oliveira International Conference on Magnetism, ICM03, 2003, poster

97.Structural and magnetic study of self-doped La1-x-yCax VacyMnO3 F. Figueiras, J.P. Araújo, V.S. Amaral,P.B. Tavares, J.B. Sousa, J.M. Vieira International Conference on Magnetism, ICM03, 2003, poster

98.Local probe studies on LaMnO3+d using the Angular Correlation Technique A.M.L. Lopes, J.P. Araújo, E.Rita, J.G. Correia, V.S. Amaral, R. Suryanarayanan International Conference on Magnetism, ICM03, 2003, poster

99.Perturbed Angular Correlation study of Pr1-xCaxMnO3 A.M.L. Lopes, J.P. Araújo, E.Rita, J.G. Correia, V.S. Amaral, Y. Tomioka, Y. Tokura, R. Suryanarayanan International Conference on Magnetism, ICM03, 2003, poster

100.Cadmium doping at the Mn site in Pr0.5Ca0.5MnO3 A.M.L. Lopes, J.P. Araújo, A.M. Gomes, M.S. Reis, V.S. Amaral, P.B. Tavares International Conference on Magnetism, ICM03, 2003, poster

101.Unusual critical behavior of the electrical resistivity near the 1st – order magnetostructural transition of Gd5(Si0.1Ge0.9)4 F.C. Correia, J.P. Araújo, J.B. Sousa, M.E. Braga, L. Morellon, P.A. Algarabel, M.R. Ibarra Conferência “International Conference on Magnetism, ICM03”, 2003, poster

102.Influence of Charge Ordering on the Magnetocaloric effect of (Pr,Ca)MnO3 Manganites M. S. Reis, A. M. Gomes, I. S. Oliveira, V. S. Amaral, J. P. Araújo, P. B. Tavares XXVI Encontro de Física da Materia Condensada, Cachambu, Brasil, Gr: 04; Comm. 326 (2003)

103.Tunneling Effects on Metal-Manganite Interface M. S. Reis, I. S. Oliveira, M. A. Valente, J. P. Araújo, P. B. Tavares, V. S. Amaral XXVI Encontro de Física da Materia Condensada, Cachambu, Brasil, Gr: 04, Comm. 329 (2003)

104.Electric and Magnetic Properties of Cd-doped Manganites:La1-xCdxMnO3 vs LaCdxMn1-xO3 A.M.L. Lopes, J.P. Araújo, T.M. Mendonça, V.S. Amaral, A.M.Gomes, P.B.Tavares and J.B.Sousa, Joint European Magnetic Symposia, MG-poster-687, Dresden, Setembro 2004.

105.Magnetocalorific effect in manganites. J.S. Amaral, M.S. Reis, J.P.Araújo, P.B. Tavares, A.M.Gomes, I.S. Oliveira, V.S. Amaral Joint European Magnetic Symposia, MG-poster-687, Dresden, Setembro 2004.

106.Relaxation phenomena in current induced switching in thin magnetic tunnel junctions J. Ventura, J.P. Araújo, F. Carpinteiro, J.B. Sousa, Y. Liu, Z. Zhang, P.P. Freitas Joint European Magnetic Symposia JEMS’04,Dresden, Alemanha, poster

107.Electric field gradient fluctuations on LaMnO3.12 studied by perturbed angular correlation technique J.P. Araújo, A.M.L.Lopes, E. Rita, J.G. Correia, V.S. Amaral; R. Suryanarayanan and the ISOLDE Colaboration Joint European Magnetic Symposia JEMS’04,Dresden, Alemanha, poster

108.Thermopower and electrical resistivity behavior near the martensitic transition in Gd5(SixGe1-x)4 magnetocaloric compounds F.C. Correia, J. P. Araújo, R. P. Pinto, M.E. Braga, J.B. Sousa, A.M. Pereira, L. Morellon, P.A. Algarabel, M.R. Ibarra, C. Magen Joint European Magnetic Symposia JEMS’04,Dresden, Alemanha, Poster

109.Magnetocaloric effect in Er-doped ferromagnetic La-Sr and La-Ca manganites J. S. Amaral, V. S. Amaral , T. M. Mendonça, J. P. Araújo, M. A. Sá, P. B. Tavares , and J. M. Vieira Joint European Magnetic Symposia JEMS’04,Dresden, Alemanha, Poster

110.Electric Field Gradient studies on LaMnO3+d; A.M.L.Lopes, J.P. Araújo, E. Rita, J.G. Correia, V.S. Amaral; R. Suryanarayanan and the ISOLDE Colaboration Joint Hyperfine Interaction 2004 and NuclearQuadrupole Interactions, 2004, Bona, 2004, poster

111.Thermopower and electrical resistivity near the magnetostructural transformation in the Tb5Si2Ge2 J.P. Araújo, C. Magen, R.P. Pinto, J.B. Sousa, F. Correia, M.E. Braga, A.M. Pereira, C. Gaspar, L. Morellon, P.A. Algarabel, M.R. Ibarra, 49th Annual Conference on Magnetism and Magnetic Materials, Jacksonville, Florida, USA, Nov 7-11, 2004, poster.

112.Temperature dependence of Current Induced Switching in thin magnetic Tunnel Junctions, J. Ventura, J.P. Araújo, F. Carpinteiro, J.B. Sousa, Y. Liu, Z. Zhang, P.P. Freitas 49th Annual Conference on Magnetism and Magnetic Materials, Jacksonville, Florida, USA, Nov 7-11, 2004, Abstracts book pg.379, poster GR-05..

113.Current induced electromigration in metal-insulator interfaces: potential applications for multi-state magnetic tunnel junctions, J. Ventura, J. Teixeira, J. P. Araujo, F. Carpinteiro, J. B. Sousa, Y. Liu, Z. Zhang and P. P. Freitas, Conferência Aveiro (2005). (Poster€)

114.Spin reorientation transition and exotic magnetism in dilute Gd1-xYx single crystals (x < 0.1) revealed by a.c. magnetoresistance studies, J.A.M. Santos, J.B. Sousa, J.P.Araújo, F. Correia ,J.F.Collingwood, S.B.Palmer, Conferência “Materiais 2005”, 20 a 23 de Março de 2005, Aveiro. (Poster)

115.Transition from ferro to mictomagnetism in rich FexAl1-x alloys. A magnetoresistivity study, M.M.Amado, M.E.Braga, D.Schmool, A.M.Pereira, J.M.Moreira, J.P.Araújo, J.B.Sousa, J.S.Garitaonandia, F.Plazaola, EMRS 2005, Fall meeting, Varsóvia, Polónia (5-9 de Set. 2005). (Poster)

116.Tunning of magnetocaloric effect in ferromagnetic La-Sr manganites through Er and Eu doping J.S. Amaral, M.S. Reis, V.S. Amaral, T.M.Mendoça, J.P.Araújo, P.B.Tavares, J.M. Vieira Conferência Aveiro (2005). (Poster)

117.Preparation and properties of new superconductor material MgB2 F.M.Carrasco, J.P.Araújo, J.B.Sousa, J.M. Amaral Conferência “Materiais 2005”, 20 a 23 de Março de 2005. (Poster)

118.Exotic behaviour and transport properties of R5(Six Ge1-x)4 giant magnetocaloric compounds (R= Gd, Tb, Er) J.P. Araújo, A.M. Pereira, R.P.Pinto, M.E. Braga, F.C. Correia, F. Carpinteiro, J.M. Teixeira, J.B. SousaL.Morellon, P.A. Algarabel, C.Magen and M.R. Ibarra, , Conferência “Materiais 2005”, 20 a 23 de Março de 2005. (Poster)

119.Cd-doped LaMnO3 manganites prepared by the sol-gel technique A.M.L. Lopes, J.P. Araújo, A.M. Gomes3, T.M. Mendonça, P.B. Tavares,J.G. Correia, V.S. Amaral Materials2005, Aveiro, Portugal, 2005

126. Current-induced electromigration in metal-insulator interfaces: potential applications for multi-state magnetic tunnel junctions, J. Ventura, J. M. Teixeira, J. P. Araújo, F. Carpinteiro, J. B. Sousa, Y. Liu, Z. Zhang and P. P. Freitas, Materiais 2005, Aveiro, Portugal, March 20-23, 2005.

127. Exotic behaviour and transport properties of R5(SixGe(1-x))4 giant magnetocaloric compounds (R = Gd, Tb, Er), J. P. Araújo, A. M. Pereira, R. P. Pinto, M. E. Braga, F. C. Correia, J. M. Teixeira, J. B. Sousa, L. Morellon, P. A. Algarabel, C. Magen and M. R. Ibarra, Materiais 2005, Aveiro, Portugal, March 20-23, 2005.

128. Domain imaging, MOKE and AMR in CoFeB films for MRAM applications, J. M. Teixeira, R. F. A. Silva, J. Ventura, J. P. Araújo, M. M. Amado, J. B. Sousa, S. Cardoso, R. Ferreira and P. P. Freitas, EMRS 2005 Spring Meeting, Strasbourg, France, May 31-June 3, 2005.

129. Thermopower in advanced specular spin valve, A. M. Pereira, J. Ventura, J. M. Teixeira, J.P. Araujo, M. E. Braga, R. P. Pinto, J. B. Sousa, P. P. Freitas, A. Veloso, Y. Liu, and Z. Zhang, EMRS 2005 Fall Meeting, Warsaw, Poland, September 5-9, 2005.

130. Structural and magnetic characterization of thin films prepared by ion beam deposition, D. Leitão, J. M. Teixeira, R. F. A. Silva, J. P. Araújo, J. B. Sousa, I. G. Trindade, R. Fermento, N. Franco and E. Alves, EMRS 2005 Fall Meeting, Warsaw, Poland, September 5-9, 2005.

131. A study of magnetic thin films prepared by ion beam deposition by magnetooptic imaging, D. Leitão, J. M. Teixeira, R. F. A. Silva, J. P. Araújo, J. B. Sousa, I. G. Trindade, R. Fermento, N. Franco and E. Alves, RIVA - 5th Iberian Vacuum Meeting, Guimarães, Portugal, 18 to 21 September 2005.

132. Electromigration-driven resistance switching in tunnel junctions, J. Ventura, J. Teixeira, A. Pereira, J. P. Araújo, J. B. Sousa, Y. Liu, Z. Zhang and P. P. Freitas, Abstract accepted to 50th Conference on Magnetism €and Magnetic Materials: October 30-November 3, 2005, San Jose, California.

133. Tuning of magnetocaloric effect in ferromagnetic La-Sr manganites through Er and Eu doping J. S. Amaral, M. S. Reis, V. S. Amaral, T. M. Mendonca, J. P. Araujo, P. B. Tavares, J. M. Vieira; XII Portuguese Materials Society Meeting III International Materials Symposium, Aveiro, Portugal

134. Efeito Magnetocalorico e Refrigeracao Magnetica, J.S. Amaral, M.S. Reis, V.S. Amaral, J.M. Vieira, J.P. Araujo, P.B. Tavares; Fisica 2005 - Fisica para o sec. XXI., Porto, Portugal (2005)

135. Effect of Rare Earth ion in the Thermopower of R5(SixGe1-x)4 Compounds with x~0.5 and R=Gd and Tb A.M. Pereira , C. Magen , J. P. Araujo , P. A. Algarabel , L. Morellon , M. E. Braga , R.P. Pinto , M. R. Ibarra, J.B. Sousa International Conference on Magnetism, 2006, Kyoto, Japan

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