Reviews of topical problems

Itinerant metamagnetism

a Lomonosov Moscow State University, Vorobevy Gory, Moscow, 119991, Russian Federation

The experimental and theoretical publications on itinerant metamagnetism--the jump-like transition, induced by a magnetic field, of a paramagnetic system of itinerant electrons into a magnetically ordered state--are reviewed. The conditions necessary for the appearance of the metamagnetic transition are formulated on the basis of Stoner's model, and a theory of itinerant metamagnetism for weak itinerant magnets is presented. The effect of fluctuations of the spin density on the properties of an itinerant metamagnet is examined. The results of experimental studies of itinerant metamagnetism, induced by both external and internal effective magnetic fields, in a system of electrons of a number of intermetallides are presented. The systems Co(Se$_{1—x}$S$_x$)$_2$, Y(Co$_{1—x}$Al$_x$)$_2$, and Lu(CO$_{1—x}$Al$_x$)$_2$, the compounds RCO$_2^{-1}$, ThCo$_5$, CeCo$_5$, and others are studied. Some other phenomena associated, like itinerant metamagnetism, with the sharp energy dependence of the density of states near the Fermi level are discussed.

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Fulltext is also available at DOI: 10.1070/PU1988v031n08ABEH004922
PACS: 75.30.Kz, 75.10.Lp, 75.20.−g, 75.60.Ej (all)
DOI: 10.1070/PU1988v031n08ABEH004922
Citation: Levitin R Z, Markosyan A S "Itinerant metamagnetism" Sov. Phys. Usp. 31 730–749 (1988)
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Оригинал: Левитин Р З, Маркосян А С «Зонный метамагнетизм» УФН 155 623–657 (1988); DOI: 10.3367/UFNr.0155.198808c.0623

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