Hysteretic properties of a magnetic particle with strong surface anisotropy

Physical Review B - Condensed Matter and Materials Physics

Volumn 66, Issue 17, 2002, Pages 1744191-17441911

  Kachkachi, H ^a   Dimian, M ^a  

^a LABORATOIRE DES SCIENCES DU CLIMAT ET DE L ENVIRONNEMENT   (France)

Author keywords

[No Author keywords available]

Indexed keywords

FERROMAGNETIC MATERIAL;

ANISOTROPY; ARTICLE; CRYSTAL STRUCTURE; HYSTERESIS; LOW TEMPERATURE; MAGNETISM; MATHEMATICAL ANALYSIS; MOLECULAR MODEL; PARTICLE SIZE; TEMPERATURE DEPENDENCE;

EID: 0036870334     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (25)

1. H. Kachkachi, A. Ezzir, M. Noguès, and E. Tronc, Eur. Phys. J. B 14, 681 (2000); H. Kachkachi and D. A. Garanin, Physica A 300, 487 (2001).
2. H. Kachkachi, A. Ezzir, M. Noguès, and E. Tronc, Eur. Phys. J. B 14, 681 (2000); H. Kachkachi and D. A. Garanin, Physica A 300, 487 (2001).
3. E. C. Stoner and E. P. Wohlfarth, Philos. Trans. R. Soc. London, Ser. A 240, 599 (1948); IEEE Trans. Magn. MAG-27, 3475 (1991).
4. E. C. Stoner and E. P. Wohlfarth, Philos. Trans. R. Soc. London, Ser. A 240, 599 (1948); IEEE Trans. Magn. MAG-27, 3475 (1991).
5. D. A. Dimitrov and G. M. Wysin, Phys. Rev. B 50, 3077 (1994).
6. H. Kachkachi and D. A. Garanin, Eur. Phys. J. B 22, 291 (2001).
7. M. Dimian and H. Kachkachi, J. Appl. Phys. 91, 7625 (2002).
8. W. F. Brown, Jr., Micromagnetics (Interscience, New York, 1963); A. Aharoni, Introduction to the Theory of Ferromagnetism (Oxford Science Publications, New York, 1996); V. Shilov, Ph.D. thesis, University of Paris VII, December, 1999.
9. W. F. Brown, Jr., Micromagnetics (Interscience, New York, 1963); A. Aharoni, Introduction to the Theory of Ferromagnetism (Oxford Science Publications, New York, 1996); V. Shilov, Ph.D. thesis, University of Paris VII, December, 1999.
10. W. F. Brown, Jr., Micromagnetics (Interscience, New York, 1963); A. Aharoni, Introduction to the Theory of Ferromagnetism (Oxford Science Publications, New York, 1996); V. Shilov, Ph.D. thesis, University of Paris VII, December, 1999.
11. L. Néel, J. Phys. Radium 15, 225 (1954).
12. D. A. Garanin and H. Kachkachi, cond-mat/0210098 (unpublished).
13. A. I. Akhiezer, V. G. Bar'yakhtar, and S. V. Peletminskii, Spin Waves (North-Holland, Amsterdam, 1968), Chap. 1.
14. A. Hahn, Phys. Rev. B 1, 3133 (1970).
15. It is sufficient to consider such a small particle, since for a strong exchange coupling and all easy axes along the same direction z the result would be the same for a large particle, but then the calculation of the SW astroid is much more time consuming.
16. F. B. Hagedorn, J. Appl. Phys. 38, 263 (1967); AI. Stancu, IEEE Trans. Magn. 33, 2573 (1997).
17. F. B. Hagedorn, J. Appl. Phys. 38, 263 (1967); AI. Stancu, IEEE Trans. Magn. 33, 2573 (1997).
18. s = 1, there is only one jump in the hysteresis loop as can be seen in Fig. 8 (left). Hence the critical field coincides with the switching field.
19. 2.
20. M. Respaud, J. M. Broto, H. Rakoto, A. R. Fert, L. Thomas, B. Barbara, M. Verelst, E. Snoeck, P. Lecante, A. Mosset, J. Osuna, T. Ould Ely, C. Amiens, and B. Chaudret, Phys. Rev. B 57, 2925 (1998).
21. J. P. Chen, C. M. Sorensen, K. J. Klabunde, and G. C. Hadjipanayis, Phys. Rev. B 51, 11 527 (1995).
22. M. Jamet, W. Wernsdorfer, C. Thirion, D. Mailly, V. Dupuis, P. Mélinon, and A. Pérez, Phys. Rev. Lett. 86, 4676 (2001).
23. D. R. Rolison, in Nanomaterials: Synthesis, Properties, and Applications, edited by A. S. Edelstein and R. C. Cammarata (Institute of Physics, Bristol, 1998), p. 305.
24. C. Chen, O. Kitakami, and Y. Shimada, J. Appl. Phys. 84, 2184 (1998); T. Ibusuki, S. Kojima, O. Kitakami, and Y. Shimada, IEEE Trans. Magn. (to be published).
25. C. Chen, O. Kitakami, and Y. Shimada, J. Appl. Phys. 84, 2184 (1998); T. Ibusuki, S. Kojima, O. Kitakami, and Y. Shimada, IEEE Trans. Magn. (to be published).