Anomalous magnetic properties of ferrites of the CuFe2?x
CrxO4 system with high Cr3+ content |
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Authors: | L G Antoshina A N Goryaga E N Kukudzhanova I A Filgus |
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Institution: | (1) M. V. Lomonosov Moscow State University, 119890 Moscow, Russia |
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Abstract: | The paper reports on a comprehensive study of magnetic properties of CuFe2−x
CrxO4 ferrites (x=0.0, 0.2, 0.3, 1.0, 1.4, 1.6, and 2.0). The curves of magnetization versus temperature, σ
s(T), of the ferrites with x=1.0, 1.4, and 1.6 have anomalous shapes: the magnetization begins to fall off at lower temperatures than the Curie point
TC. The experimental results and analysis of exchange interactions suggest that in ferrites with high Cr3+ content, magnetic transitions to either a frustrated magnetic structure or a clustered spin glass can take place.
Zh. éksp. Teor. Fiz. 111, 1732–1737 (May 1997) |
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