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Spontaneous magnetization of substituted two-sublattice ferrimagnets with angular magnetic configuration

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Abstract

A statistical model of a ferrimagnet with diamagnetically dilute “weak” sublattice is examined in a molecular field approximation with exchange interactions taken into account in the first and second coordination spheres. The magnetic configuration is represented as a set of local spin groups having a different number of magnetic neighbors; the noncollinearity angle for such groups is a function of the temperature and degree of substitution. For definite values of the exchange integrals Ij i and the local magnetizations, conditions occur for the transition to a collinear configuration in a given group, which leads to a sequence of matrix phase transformations in the magnetic ordering domain. The theory developed is in good agreement with experimental data for Y-Sc ferrogarnets obtained by neutron and x-ray structural analyses.

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Authors and Affiliations

  1. V. D. Kuznetsov Siberian Physicotechnical Institute, USSR

    S. M. Zhilyakov, V. V. Ivolga & E. P. Naiden

  2. Tomsk State University, USSR

    S. M. Zhilyakov, V. V. Ivolga & E. P. Naiden

Authors
  1. S. M. Zhilyakov
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  2. V. V. Ivolga
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  3. E. P. Naiden
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 12, pp. 9–14, December, 1981.

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Zhilyakov, S.M., Ivolga, V.V. & Naiden, E.P. Spontaneous magnetization of substituted two-sublattice ferrimagnets with angular magnetic configuration. Soviet Physics Journal 24, 1071–1076 (1981). https://doi.org/10.1007/BF00893725

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  • DOI: https://doi.org/10.1007/BF00893725

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