Coercive force of single crystals of magnetite at low temperatures

Geophysical Journal International

Volumn 141, Issue 2, 2000, Pages 351-356

  Özdemir, Özden ^a  

^a UNIVERSITY OF TORONTO   (Canada)

Author keywords

Coercive force; Magnetic anisotropy; Magnetic hysteresis; Magnetite; Verwey transition

Indexed keywords

HYSTERESIS; MAGNETIC ANISOTROPY; MAGNETIC PROPERTY; MAGNETITE;

EID: 0034109230     PISSN: 0956540X     EISSN: None     Source Type: Journal    
DOI: 10.1046/j.1365-246X.2000.00081.x     Document Type: Article

References (24)

1. Abe, K., Miyamoto, Y. & Chikazumi, C., 1976. Magnetocrystalline anisotropy of the low temperature phase of magnetite, J. Phys. Soc. Japan, 41, 1894-1902.
2. Arai, K.I., Ohmori, K., Tsuya, N. & Iida, S., 1976. Magnetostriction of magnetite in the vicinity of the low-temperature transition, Phys. Stat. Sol., 34, 325-330.
3. Dunlop, D.J. & Özdemir, Ö., 1997. Rock Magnetism: Fundamentals and Frontiers, Cambridge University Press, New York.
4. Goodenough, J.B., 1954. A theory of domain creation and coercive force in polycrystalline ferromagnetics, Phys. Rev., 95, 917-932.
5. Heider, F., Dunlop, D.J. & Soffel, H.C., 1992. Low-temperature and alternating field demagnetization of saturation remanence and thermoremanence in magnetite grains (0.037 μm to 5 mm), J. geophys. Res., 97, 9371-9381.
6. Hodych, J.P., 1990. Magnetic hysteresis as a function of low temperature in rocks: evidence for internal stress control of remanence in multidomain and pseudo-single-domain magnetite, Phys. Earth planet. Inter., 64, 21-36.
7. Hodych, J.P., Mackay, R.I. & English, G.M., 1998. Low-temperature demagnetization of saturation remanence in magnetite-bearing dolerites, Geophys. J. Int., 132, 401-411.
8. Kersten, M., 1943. Grundlagen einer Theorie der ferromagnetischen Hysterese und der Koerzitivkraft, S. Hirzel, Leipzig.
9. Kobayashi, K. & Fuller, M., 1968. Stable remanence and memory of multidomain materials with special reference to magnetite, Phil. Mag., 18, 601-624.
10. Morrish, A.H. & Watt, L.A.K., 1958. Coercive force of iron oxide micropowders at low temperatures, J. appl. Phys., 19, 1029-1033.
11. Moskowitz, B.M., 1993. Micromagnetic study of the influence of crystal defects on the coercivity in magnetite, J. geophys. Res., 98, 18011-18026.
12. Muxworthy, A.R., 1999. Low-temperature susceptibility and hysteresis of magnetite, Earth planet. Sci. Lett., 169, 51-58.
13. 4 by high resolution electron microscopy, J. Solid State Chem., 61, 212-222.
14. Özdemir, Ö. & Dunlop, D.J., 1997. Effect of crystal defects and internal stress on the domain structure and magnetic properties of magnetite, J. geophys. Res., 102, 20211-20224.
15. Özdemir, Ö. & Dunlop, D.J., 1998. Single-domain-like behaviour in a 3 mm natural single crystal of magnetite, J. geophys. Res., 103, 2549-2562.
16. Özdemir, Ö. & Dunlop, D.J., 1999. Low-temperature properties of a single crystal of magnetite oriented along principal magnetic axes, Earth planet. Sci. Lett., 165, 229-239.
17. Ozima, M., Ozima, M. & Akimoto, S., 1964. Low temperature characteristics of remanent magnetization of magnetite self-reversal and recovery phenomena of remanent magnetization, J. Geomag. Geoelectr., 16, 165-177.
18. Roberts, A.P., Cui, Y. & Verosub, K.L., 1995. Wasp-waisted hysteresis loops: mineral magnetic characteristics and discrimination of components in mixed magnetic systems, J. geophys. Res., 100, 17909-17924.
19. 3 particles ∼250 nm in diameter, J. Magn. Magn. Mater., 152, 99-108.
20. 4 particles in the grain size range 60-160 nm, Phys. Earth planet. Inter., 46, 77-83.
21. Tauxe, L., Mullender, T.A.T. & Pick, T., 1996. Pot-bellies, wasp-waists and superparamagnetism in magnetic hysteresis, J. geophys. Res., 101, 571-583.
22. Träuble, H., 1969. The influence of crystal defects on magnetization processes in ferromagnetic single crystals, in Magnetism and Metallurgy, pp. 622-688, eds Berkowitz, A.E. & Kneller, E., Academic Press, San Diego.
23. Tsuya, N., Arai, K.I. & Ohmori, K., 1977. Effect of magnetoelastic coupling on the anisotropy of magnetite below the transition temperature, Physica, 86-88B, 959-960.
24. Xu, S. & Merrill, R.T., 1990. Thermal variation of domain wall thickness and number of domains in magnetic rectangular grains, J. geophys. Res., 95, 21 433-21 440.