Methodological notes

Pyromagnetic effect in ferrimagnets with a ’weak’ sublattice

Lomonosov Moscow State University, Department of Physics, Leninskie Gory 1 build. 2, Moscow, 119991, Russian Federation

The temperature dependence of the residual and spontaneous magnetization in ferrites with a ’weak’ sublattice may be taken as evidence for the pyromagnetic effect — a magnetic analog of the pyroelectric effect — in which the magnetization of a sample increases on cooling in the absence of an external magnetic field. A confirmation of this has been provided by the observation of a thermodynamically inverse phenomenon, the linear magnetocaloric effect, in such ferrites. These effects are due to the unidirectional exchange anisotropy characteristic of ferrimagnets with a weak sublattice.

PACS: 75.50.−y, 75.50.Gg, 75.80.+q, 75.90.+w (all)
DOI: 10.1070/PU2000v043n04ABEH000723
Citation: Belov K P "Pyromagnetic effect in ferrimagnets with a 'weak' sublattice" Phys. Usp. 43 407–413 (2000)
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Оригинал: Белов К П «О проявлении пиромагнитного эффекта в ферримагнетиках со „слабой“ подрешеткой» УФН 170 447–454 (2000); DOI: 10.3367/UFNr.0170.200004f.0447

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