Electronic processes in magnetite (or, "Enigmas of magnetite")

The properties of magnetite in the region of the low-temperature transformation T_t = 100 – 120 K are in many respects still unclear and even enigmatic, in spite of the enormous number of studies that have been undertaken over the years. In this review article a new model for the low-temperature transformation in magnetite is presented, based on an examination of the features of the temperature and field dependence of the spontaneous magnetization, magnetoresistance, and magnetocaloric effect and an analysis of the anomalies of electronic origin in the magnetic anisotropy and magnetostriction and the accompanying anomalies in the technical magnetization characteristics in the T_t region. This "magnetic-electronic" model of the transition is consistent with experimental facts that do not fit into the well-known Verwey model of a "structural-electronic" transition.

PACS: 75.47.Lx, 75.30.Sg, 75.60.Ej, 75.80.+q, 75.30.Gw (all)
DOI: 10.1070/PU1993v036n05ABEH002160
URL: https://ufn.ru/en/articles/1993/5/c/
Citation: Belov K P "Electronic processes in magnetite (or, 'Enigmas of magnetite')" Phys. Usp. 36 (5) 380–391 (1993)

BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks

Оригинал: Белов К П «Электронные процессы в магнетите („Загадки магнетита“)» УФН 163 (5) 53–66 (1993); DOI: 10.3367/UFNr.0163.199305c.0053

References (68) Cited by (49) Similar articles (20) ↓

K.P. Belov “Anomalies of the magnetoresistance of ferrites” Phys. Usp. 37 563–575 (1994)
V.F. Kovalenko, E.L. Nagaev “Photoinduced magnetism” Sov. Phys. Usp. 29 297–321 (1986)
A.S. Andreenko, K.P. Belov et al “Magnetocaloric effects in rare-earth magnetic materials” Sov. Phys. Usp. 32 649–664 (1989)
K.P. Belov, A.M. Kadomtseva “Magnetoelastic properties of rare-earth orthoferrites” Sov. Phys. Usp. 14 154–162 (1971)
K.P. Belov, A.K. Zvezdin et al “Spin-reorientation transitions in rare-earth magnets” Sov. Phys. Usp. 19 574–596 (1976)
O.Yu. Belyaeva, L.K. Zarembo, S.N. Karpachev “Magnetoacoustics of ferrites and magnetoacoustic resonance” Sov. Phys. Usp. 35 (2) 106–122 (1992)
V.D. Buchel’nikov, A.N. Vasil’ev “Electromagnetic generation of ultrasound in ferromagnets” Sov. Phys. Usp. 35 (3) 192–211 (1992)
Yu.A. Izyumov “Modulated, or long-periodic, magnetic structures of crystals” Sov. Phys. Usp. 27 845–867 (1984)
I.A. Privorotskii “Thermodynamic theory of ferromagnetic domains” Sov. Phys. Usp. 15 555–574 (1973)
K.P. Belov, G.I. Kataev et al “Giant magnetostriction” Sov. Phys. Usp. 26 518–542 (1983)
M.I. Shliomis “Magnetic fluids” Sov. Phys. Usp. 17 153–169 (1974)
K.P. Belov, R.Z. Levitin, S.A. Nikitin “Ferromagnetism and antiferromagnetism of rare-earth metals” Sov. Phys. Usp. 7 179–208 (1964)
V.I. Ozhogin, V.L. Preobrazhenskii “Anharmonicity of mixed modes and giant acoustic nonlinearity of antiferromagnetics” Sov. Phys. Usp. 31 713–729 (1988)
Yu.V. Gulyaev, I.E. Dikshtein, V.G. Shavrov “Magnetoacoustic surface waves in magnetic crystals near spin-reorientation phase transitions” Phys. Usp. 40 701–716 (1997)
Yu.A. Izyumov “Solitons in quasi-one-dimensional magnetic materials and their study by neutron scattering” Sov. Phys. Usp. 31 689–712 (1988)
R.Z. Levitin, A.S. Markosyan “Itinerant metamagnetism” Sov. Phys. Usp. 31 730–749 (1988)
K.G. Gurtovoi, R.Z. Levitin “Magnetism of actinides and their compounds” Sov. Phys. Usp. 30 827–850 (1987)
A.N. Vasil’ev, V.D. Buchel’nikov et al “Shape memory ferromagnets” Phys. Usp. 46 559–588 (2003)
É.V. Galoshina “Magnetic susceptibility of d-band transition metals that are not magnetically ordered” Sov. Phys. Usp. 17 345–355 (1974)
S.G. Ovchinnikov, V.V. Rudenko “Anisotropic interactions in magnetic crystals with S-state ions. Nanostructures” Phys. Usp. 57 1180–1198 (2014)

The list is formed automatically.