Relative significance of particle anisotropy in systems of ultrafine ferromagnetic particles

Journal of Applied Physics

Volumn 92, Issue 10, 2002, Pages 6057-6061

  Porto, Markus ^a  

^a MAX PLANCK INSTITUT FÜR PHYSIK KOMPLEXER SYSTEME   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

FERROMAGNETIC PARTICLES; FIELD COOLING; MONTE CARLO SIMULATION; PARTICLE CONCENTRATIONS; PARTICLE POSITION; POSITIONAL DISORDER; RELATIVE WEIGHTS; SINGLE DOMAINS; ULTRAFINE; ZERO-FIELD COOLING;

FERROMAGNETIC MATERIALS; FERROMAGNETISM; MONTE CARLO METHODS;

ANISOTROPY;

EID: 0037112955     PISSN: 00218979     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1513873     Document Type: Article

References (46)

1. J. L. Dormann, D. Fiorani, E. Tronc, Adv. Chem. Phys. 98, 283 (1997); adc ADCPAA 0065-2385
2. X. Batlle and A. Labarta, J. Phys. D 35, R15 (2002). jpd JPAPBE 0022-3727
3. E. C. Stoner and E. P. Wohlfarth, Philos. Trans. R. Soc. London, Ser. A 240, 599 (1948)
4. [ reprinted in IEEE Trans. Magn. 27, 3475 (1991)]; emg IEMGAQ 0018-9464
5. L. Néel, Ann. Geophys. (C.N.R.S.) 5, 99 (1949); ang AGEPA7 0003-4029
6. W. F. Brown, Phys. Rev. 130, 1677 (1963); phr PHRVAO 0031-899X
7. A. Aharoni and I. Eisenstein, Phys. Rev. B 11, 514 (1975); prq PLRBAQ 0556-2805
8. W. T. Coffey, D. S. F. Crothers, Yu. P. Kalmykov, E. S. Massawe, J. T. Waldron, Phys. Rev. E 49, 1869 (1994); pre PLEEE8 1063-651X
9. S. Shtrikman and E. P. Wohlfarth, Phys. Lett. A85, 467 (1981); pya PYLAAG 0375-9601
10. R. W. Chantrell and E. P. Wohlfarth, J. Magn. Magn. Mater. 40, 1 (1983). jmm JMMMDC 0304-8853
11. (a) J. L. Dormann, L. Bessais, D. Fiorani, J. Phys. C 21, 2015 (1988); jpc JPSOAW 0022-3719
12. (b) R. W. Chantrell, M. El-Hilo, K. O'Grady, IEEE Trans. Magn. 27, 3570 (1991); emg IEMGAQ 0018-9464
13. (c) W. L. Luo, S. R. Nagel, T. F. Rosenbaum, R. E. Rosensweig, Phys. Rev. Lett. 67, 2721 (1991); prl PRLTAO 0031-9007
14. (d) S. Morup and E. Tronc, 72, 3278 (1994); prl PRLTAO 0031-9007
15. (e) S. Morup, Europhys. Lett. 28, 671 (1994); eul EULEEJ 0295-5075
16. (f) T. Jonsson, J. Mattsson, C. Djurberg, F. A. Khan, P. Nordblad, P. Svedlindh, Phys. Rev. Lett. 75, 4138 (1995); prl PRLTAO 0031-9007
17. (g) J. L. Dormann, F. D'Orazio, F. Lucari, E. Tronc, P. Prené, J. P. Jolivet, D. Fiorani, R. Cherkaoui, M. Noguès, Phys. Rev. B 53, 14291 (1996); prb PRBMDO 0163-1829
18. J. L. m Dormann, L. Spinu, E. Tronc, J. P. Jolivet, F. Lucari, F. D'Orazio, D. Fiorani, J. Magn. Magn. Mater. 183, L255 (1998); jmm JMMMDC 0304-8853
19. (h) M. F. Hansen, F. Bodker, S. Morup, K. Lefmann, K. N. Clausen, P.-A. Lindgård, Phys. Rev. Lett. 79, 4910 (1997); prl PRLTAO 0031-9007
20. (i) C. Djurberg, P. Svedlindh, P. Nordblad, M. F. Hansen, F. Bodker, S. Morup, 79, 5154 (1997); prl PRLTAO 0031-9007
21. (j) C. Johansson, M. Hanson, M. S. Pedersen, S. Morup, J. Magn. Magn. Mater. 173, 5 (1997); jmm JMMMDC 0304-8853
22. (k) M. F. Hansen and S. Morup, 184, 262 (1998); jmm JMMMDC 0304-8853
23. (l) H. Mamiya, I. Nakatani, T. Furubayashi, Phys. Rev. Lett. 80, 177 (1998); prl PRLTAO 0031-9007
24. (m) T. Jonsson, P. Svedlindh, M. F. Hansen, 81, 3976 (1998); prl PRLTAO 0031-9007
25. (n) P. Allia, M. Coisson, M. Knobel, P. Tiberto, F. Vinai, Phys. Rev. B 60, 12207 (1999); prb PRBMDO 0163-1829
26. P. Allia, M. Coisson, M. Knobel, P. Tiberto, F. Vinai, M. A. Novak, W. C. Nunes, 64, 144420 (2001); prb PRBMDO 0163-1829
27. (o) M. F. Hansen, C. B. Koch, S. Morup, 62, 1124 (2000); prb PRBMDO 0163-1829
28. (p) J. C. Denardin, A. L. Brandl, M. Knobel, P. Panissod, A. B. Pakhomov, H. Liu, X. X. Zhang, 65, 064422 (2002). prb PRBMDO 0163-1829
29. J.-O. Andersson, C. Djurberg, T. Jonsson, P. Svedlindh, P. Nordblad, Phys. Rev. B 56, 13983 (1997). prb PRBMDO 0163-1829
30. J. García-Otero, M. Porto, J. Rivas, A. Bunde, Phys. Rev. Lett. 84, 167 (2000). prl PRLTAO 0031-9007
31. M. Porto, Eur. Phys. J. B 26, 229 (2002). epb EPJBFY 1434-6028
32. G. Ayton, M. J. P. Gingras, G. N. Patey, Phys. Rev. Lett. 75, 2360 (1995); prl PRLTAO 0031-9007
33. Phys. Rev. E 56, 562 (1997); pre PLEEE8 1063-651X
34. S. Ravichandran, B. Bagchi, Phys. Rev. Lett. 76, 644 (1996); prl PRLTAO 0031-9007
35. Phys. Rev. E 54, 3693 (1996); pre PLEEE8 1063-651X
36. for a comprehensive review on orientational glasses see U. T. Höchli, K. Knorr, A. Loidl, Adv. Phys. 39, 405 (1990). adp ADPHAH 0001-8732
37. 0=0.016 in real units: Maghemite particles with mean diameter around 7.5 nm studied by Jonsson et al., Phys. Rev. Lett. 75, 4138 (1995); prl PRLTAO 0031-9007
38. 0=0.016 considered correspond to c≅0.28 and c≅0.0344 in the case of maghemite particles and to c≅0.18 and c≅0.02288 in the case of iron-nitride particles, respectively. prl PRLTAO 0031-9007
39. All MC simulations (the preceding positional and the main magnetic one) are performed using the standard Metropolis algorithm, see for example K. Binder and D. W. Heermann, Monte Carlo Simulations in Statistical Physics: An Introduction, 3rd ed., Springer Series in Solid State Science, Vol. 80 (Springer, Berlin, 1997).
40. M. P. Allen and D. J. Tildesley, Computer Simulation of Liquids (Clarendon, Oxford, 1987).
41. In actual experiments, the effective value of T may be controlled for instance by the particles' coating as done by M. F. Hansen et al., Phys. Rev. B 62, 1124 (2000). prb PRBMDO 0163-1829
42. S. W. de Leeuw, J. W. Perram, E. R. Smith, Proc. R. Soc. London, Ser. A 373, 27 (1980). prz PRLAAZ 0962-8444
43. A. F. Pshenichnikov and V. V. Mekhonoshin, J. Magn. Magn. Mater. 213, 357 (2000); jmm JMMMDC 0304-8853
44. R. W. Chantrell, N. Walmsley, J. Gore, M. Maylin, Phys. Rev. B 63, 024410 (2001). prb PRBMDO 0163-1829
45. J. García-Otero, M. Porto, J. Rivas, A. Bunde, J. Appl. Phys. 85, 2287 (1999); jap JAPIAU 0021-8979
46. J. García-Otero, M. Porto, J. Rivas, 87, 7376 (2000). jap JAPIAU 0021-8979