Micromagnetic models of pseudo-single domain grains of magnetite near the Verwey Transition

Journal of Geophysical Research: Solid Earth

Volumn 104, Issue B12, 1999, Pages 29203-29217

  Muxworthy, A R ^a   Williams, W ^a  

^a UNIVERSITY OF OXFORD   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

DOMAIN STRUCTURE; MAGNETIC MINERAL; MAGNETITE;

EID: 10644271156     PISSN: 21699313     EISSN: 21699356     Source Type: Journal    
DOI: 10.1029/1999jb900294     Document Type: Article

References (45)

1. Abe, K., Y. Miyamoto, and S. Chikazumi, Magnetocrystalline anisotropy of low-temperature phase of magnetite, J. Phys. Soc. Jpn., 41(6), 1894-1902,1976.
2. Belov, K., Electronic processes in magnetite (or enigmas in magnetite), Physics Uspekhi, 36(5), 380-391,1993.
3. Bickford, L., J. Brownlow, and R. F. Penoyer, Magnetocrystalline anisotropy in cobalt-substituted magnetic single crystals, Proc. Inst. Electr. Eng., B104,238-244,1957.
4. Dunlop, D., and K. Argyle, Separating multidomain and single-domain-like remanences in pseudo-single-domain magnetites (215-540 nm) by low-temperature demagnetization,J. Geophys. Res., 96(B2), 2007-2017,1991.
5. Dunlop, D., and O. Özdemir, Rock Magnetism: Fundamentals and Frontiers, Cambridge Univ, Press, New York, 1997.
6. Enkin, R., and W. Williams, Three-dimensional micromagnetic analysis of stability in fine magnetic grains, J. Geophys. Res., 99(B1), 611-618,1994.
7. Fabian, K., and F. Heider, How to include magnetostriction in micromagnetic models of titanomagnetite grains, Geophys. Res. Lett., 23(20), 2839-2842,1996.
8. Fabian, K., A. Kirchner, W. Williams, F. Heider, T. Leibl, and A. Hubert, Three-dimensional micromagnetic calculations for magnetite using fft, Geophys. J. Int., 124, 89-104,1996.
9. x O4 (0 < x < 0.1)J. Phys. B: Solid State Phys., 7,171-178, 1974
10. Halgedahl, S., and R. Jarrard, Low temperature behaviour of single domain through multidomain magnetite, Earth Planet. Sci. Lett., 130,127-139,1995.
11. Heider, F., and W, Williams, Note of temperature dependence of exchange constant in magnetite, Geophys. Res. Lett., 15(2), 184-187,1988.
12. Heider, F., D. Dunlop, and N. Sugiura, Magnetic properties of hydrothermally recrystallised magnetite crystals, Science, 236,1287-1290,1988.
13. Heider, F., D. Dunlop, and H. Soffel, Low temperature and alternating field demagnetization of saturation remanence and thermoremanence in magnetite grains (0.037 μm to 5 mm)J. Geophys. Res., 97(B6), 9371-9381,1992.
14. Hodych, J., Low-temperature demagnetisation of saturation remanence in rocks bearing multidomain magnetite, Phys. Earth Planet. Inter., 66,144-152,1991.
15. Hodych, J., R. Mackay, and G. English, Low-temperature demagnetization of saturation remanence in magnetitebearing dolerites of high coercivity, Geophys. J. Int., 132,401-ill, 1998.
16. King, J., Magnetic properties of arrays of magnetite particles produced by the method of electron beam lithography (EBL), Ph.D. thesis, Univ. of Edinburgh, Edinburgh, Scotland, 1996.
17. Kittel, C, Physical theory of ferromagnetic domains, Rev. of Mod. Phys., 2î(4), 541-583,1949.
18. Kobayashi, K., and M. Fuller, Stable remanence and memory of multidomain materials with special reference to magnetite, Philos. Mag., 18,601-624,1968.
19. McClelland, E., and V. Shcherbakov, Metastability of domain state in MD magnetite: Consequences for remanence acquisition,J. Geophys. Res., IOO(B3), 3841-3857,1995.
20. Medrano, C, M. Schlenker, J. Baruchel, J. Espeso, and Y. Miyamoto, Domains in the low-temperature phase of magnetite from synchroton-radiation x-ray topographs, Phys. Rev. B Condens. Matter, 59,1185-1195,1999.
21. Moloni, K., B. Moskowitz, and E. Dahlberg, Domain structures in single crystal magnetite below the Verwey transition as observed with a low-temperature magnetic force microscope, Geophys. Res. Lett., 23(20), 2851-2854,1996.
22. Moskowitz, B., High-temperature magnetostriction of magnetite and titanomagnetites, J. Geophys. Res., 9S(B1), 359-371,1993.
23. Muxworthy, A., Stability of magnetic remanence in multidomain magnetite, Ph.D. thesis, Univ. of Oxford, Oxford, England, 1998.
24. Muxworthy, A., and E. McClelland, The causes of lowtemperature demagnetisation of remanence in multidomain magnetite, Geophys. J. Int., in press, 1999a.
25. Muxworthy, A., and E. McClelland, Review of the lowtemperature magnetic properties of magnetite from a rock magnetic perspective, Geophys. J. Int., in press, 1999b.
26. Muxworthy, A., and W. Williams, Micromagnetic calculation of coercive force as a function of temperature in pseudosingle domain magnetite, Geophys. Res. Lett., 26(8), 1065-1068,1999.
27. Néel, L., Propriétés d'un ferromagnétique cubique en grain fins., C. R. Acad. Sci., 224,1488-1490,1947.
28. Otsuka, N., and H. Sato, Observation of the Verwey transition in Fe304 by high-resolution electron microscopy, J. Solid. State Chem., 61,212-222,1986.
29. Özdemir, O., and D. Dunlop, Single-domain-like behavior in a 3-mm natural single crystal of magnetite, J. Geophys. Res., I03(B2), 2549-2562,1998.
30. Özdemir, O., and D. Dunlop, Low-temperature properties of a single crystal of magnetite orientated along principal magnetic axes, Earth Planet. Sci. Lett., 165,229-239,1999.
31. Ozima, M., M. Ozima, and T. Nagata, Low-temperature treatment as an effective means of magnetic cleaning of natural rémanent magnetisation.,J. Geomagn. Geodectr., 16, 37-41,1964.
32. Pauthenet, R., and L. Bochirol, Aimantation spontanée des ferrites,J. Phys. Radium, 12,249-251,1951.
33. Pokhil, T., and B. Moskowitz, Magnetic domains and domain walls in pseudo-single-domain magnetite studied with magnetic force microscopy, J. Geophys. Res., 202(B10), 22,681-22,694,1997.
34. Rave, W., K. Fabian, and A. Hubert, The magnetic states of small cubic magnetic particles with uniaxial anisotropy, J. Magn. Magn. Mater., 190,332-348,1998.
35. Schmidbauer, E., and R. Keller, Magnetic properties and rotational hysteresis of Fe3O4 and 7-Fe2O, particles ~ 250 run in diameter, J. Magn. Magn. Mater., 152,99-108,1996.
36. Shcherbakova, V., V. Shcherbakov, P. Schmidt, and M. Prévôt, On the effect of low-temperature demagnetisation on trm and ptrms, Geophys. ). Int., 127,379-386,1996.
37. Thomson, L., R. Enkin, and W. Williams, Simulated annealing of three dimensional micromagnetic structures and simulated thermoremanent magnetization, J. Geophys. Res., 99 (Bl), 603-606,1994.
38. Torrie, B., Spin-waves in magnetite at a temperature below the electronic ordering transition, Solid State Commun., 5, 715-717,1967.
39. Tsuya, N., K. Arai, and K. Ohmpri, Effect of magnetoelastic coupling on the anisotropy of magnetite below the transition temperature, Physica B, 86-88,959-961,1977.
40. Verwey, E., Electronic conduction of magnetite (Fe3O.) and its transition point at low-temperature, Nature, 44,327-328, 1939.
41. Vinogradov, Y, and G. Markov, On the effect of low temperature heating on the domain state of multidomain magnetite, in Investigations in rochnagnetism and palaeomagnetism (in Russian), pp. 31-39, Inst. of Phys. of the Earth, Moscow, 1989.
42. Williams, W., and D. Dunlop, Three-dimensional micromagnetic modelling of ferromagnetic domain structure, Nature, 377,634-637,1989.
43. Williams, W., and T. M. Wright, High-resolution micromagnetic models of fine grains of magnetite, J. Geophy. Res., 103(B12), 30,537-30,550,1998.
44. Wright, T., W. Williams, and D. Dunlop, An improved algorithm for micromagnetics,J. Geophys. Res., 102(B6), 12,085-12,094,1997.
45. Ye, J., A. Newell, and R. Merrill, A re-evaluation of the magnetocrystalline^nisotropy and magnetostriction constants, Geophys. Res. Lett., 22(1), 25-28,1994.