Abstract
Magnetic superlattices, also known as multilayers, are alternating thin layers of magnetic and nonmagnetic materials constructed with thicknesses on the order of magnitude of the characteristic length-range of the magnetic interactions between the layers in thesuperlattices. They have interesting properties with respect to resistance and magnetization. The discovery of giant magnetoresistance (GMR) effect in this magnetic superlattice allowed the developments of GMR sensors for reading heads of hard discs and non volatile magnetic memories (MRAM). Exchange Bias effect occurs when two materials, one ferromagnetic and another antiferromagnético are in atomic contact after the system is cooled below the respective Neel and Curie temperatures in an external cooling field. Its characteristic signature is the shift of the center of the hysteretic loop from its normal position to H E. The La x Ca 1-x MnO 3 (LCMO) manganite is an ideal system to study exchange bias effect, because depending of the Ca content the system exhibit ferro and antiferromagnetic behavio.
Keywords
References
Schuller, Ivan K. Phys.Rev. Lett. 44 1597 (1980).
Gradmannn U. “Handbook of Magnetic Materials” Elsevier (1993).
de Jorge W.J.M. et al.. In “Ultrathin Magnetic Structures“ Springer Verlag (19944 Schuller, I. K. S. Kim. C Leighton. J. Magn Magm Matter 200 571, 582 (1999).
Mitani S. et al. J. Magn. Matter 156, 7 (1996).
Li, Y. K. Baberschke Phys. Rev. Lett. 68 1208 ( 1992).
Santamaría,J. J. L. Vicent, I. K. Schuller. Revista Española de Física 16(3) 12 (2002).
Baibich, M. N. et al.; Phys. Rev. Lett. 61, 2472 (1988).
Binasch,G. P. Grünberg, F. Saurenbach and W. Zinn, Phys. Rev. B 39 4828 (1989).
Grünberg P. et al. Phys. Rev. Lett. 57, 2442 (1986).
“Desarrollo de Dispositivos magnetoelectrónicos de multicapas magnéticas basadas en manganitas”, Colciencias-Univalle 2002-2005; “Nanoscale carac-terization of ferroelectric thin films”, Colciencias-Univalle 2003-2005; “Structural and transport studies in Fe-Cr magnetic superlattices”, UCSD-Univalle 1998-2003.
Campbell I. A. and A. Fert, in “Ferromagnetic Materials” , ed. E. P. Wohlfarth, North Holland, Amsterdam (1982).
Parkin, S. S. P. N. More, and K. P. Roche, Phys. Rev. Lett. 64, 2304 (1990).
Parkin, S. S. P. Phys. Rev. Lett. 67, 3598 (1991).
For a review, see M. A. M. Gijs and G. E. W. Bauer, Adv. in Phys. 46, 285 (1997)
Barthelemy, A. A. Fert and F. Petroff, in Handbook of Magnetic Materials, Vol. 12, ed. K. H. J. Buschow, p.1 (1999)
Fert, A. and I.A. Campbell, J. Phys. F 6 849 (1976)
Camley R. E. and J. Barnas, Phys. Rev. Lett. 63, 664 (1989)
Inoue J. and S. Maekawa, Prog. Theor. Phys. 106, 187 (1991); H. Ito, J. Inoue, and S. Maekawa, Phys. Rev. B 51, 342 (1995).
Pratt W. P. Jr., S.-F. Lee, J. M. Slaughter, R. Lo loee, P. A. Schroeder and J. Bass, Phys. Rev. Lett. 66, 3060 (1991).
Gijs, M. A. M. et. al; Phys. Rev. Lett. 70, 3343 (1993).
Zhang S. and P. M. Levy, J. Appl. Phys. 69, 4786 (1991); T. Valet and A. Fert, Phys. Rev. B 48, 7099 (1993); S.-F. Lee et al., Phys. Rev. B 52, 15426 (1995).
Weber W. et al. Phys. Rev. Lett. 78 3424 (1996).
Meikleijohn, W. H. C. P. Bean, Phys. Rev. 102 (5) 1413 (1956).
Para una revisión ver por ejemplo J. Nogués, I. K. Schuller, J. Magn. Magn. Mater. 192 203 (1999).
Dieny, B. J. Magn Magm Matter. 136 335 (1994)
Buerler D. and P. Gruenberg KFZ Juelich Ferien Schule A41-A425 (2000).
Mauri, D. et al.; J. Appl. Phys. 62, 3047 (1987).
Malozsemoff, A.P. Phys Rev. B 35, 3679, (1987)
Nolting F. et al. Nature 405, 767 (2000)
Moseret A et al.; J. Phys D Appl. Phys. 38, 4157-R167 (2002).
Fullerton, E. E. D. M. Kelly, J. Guimpel and Ivan K. Schuller, Phys. Rev. Lett. 68, 859 (1992).
Cyrille, M. C. S. Kim, M.E. Gomez, J. Santamaria, Kannan M. Krishnan and Ivan K. Schuller, Phys. Rev. B 62, 336 (2000).
Cyrille, M. C. S. Kim, M. E. Gómez, J. Santamaria, C. Leighton, Kannan M. Krishnan and Ivan K. Schuller, Phys. Rev. B 62, 15079 (2000).
Ruehrig, M. R. Schaefer, A. Huber, R. Mosler, J.A. Wolf, S. Demokritov, and P. Gruenberg, Phys. Status Solidi A 125, 635 (1991).
Valet T. and A. Fert, Phys. Rev. B 48, 7099 (1993).
Ijiri, Y. J. J. Phys.: Condens. Matter. 14 (2002) R947- R966.
Campillo, G. L. F. Castro, P. Vivas, E. Baca, P. Prieto D. Arias, J. Santamaría, A. Berger, and S. D. Bader; Surface Review Letters 9, 1611-11615(2002).
O’Handley, R. in Modern Magnetic Materials Wiley, New York, (2000).
Moutis, N. et al., Phys. Rev. B, 64 (2001) 094429 and references therein.
Prieto, P. M. E. Gómez, G Campillo, A. Berger, E. Baca, R. Escudero, F. Morales. Physica Status Solidi 201 2343-2346 (2004).
Stiles M. D. et. al., Physical Review B 60, 12 950 (1999); 59, 3722 (1999).
Berger, A. G. Campillo, P. Vivas, J. E. Pearson S. D. Bader, E. Baca and P. Prieto, Journal of Applied Physics 91 8393 (2002).
Comunicación personal J. Guimpel, N. Haberkorn, A. Condó, Centro Atómico de Bariloche y el Laboratorio de Microscopía Electrónica del CAB, Argentina (2005).
Haberkorn, N. J. Guimpel, L. B. Steren, G. Campillo, W. Saldarriaga, and M. E. Gómez; Journal of Applied Physics 94 (51) 3011-3014 (2003).
Fullerton, E. E. I. K. Schuller, H. Vanderstraeten, and Y. Bruynseraede, Physical Review B 45, 9292 (1992).
Peng, B. X. X. Zhang, Z. Xie, H. J. Tao, B. Xu, H. Liu, B. R. Zhao, Phys. Rev. B 61 8955 (2000).
Mendoza, G. A. O. Guzmán, H. Ariza-Calderón, P. Prieto; Journal of Applied Physics, 97 10A507 (2005).
Campillo, G. A. Hoffmann, M. E. Gómez, P. Prieto; Journal of Applied Physics 97 10K104 (2005); M.E. Gómez, J. Santamaría, S. Kim, Kankan M. Krishnan, Ivan K. Schuller, Physical Review B 71 125410 (2005).
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright (c) 2023 Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales