Mean-field solution of the mixed spin-1 and spin-32 Ising system with different single-ion anisotropies

O.F. Abubrig, D. Horváth, A. Bobák and M. Jaščur

Physica A: Statistical Mechanics and its Applications, 2001, vol. 296, issue 3, 437-450

Abstract: The mixed spin-1 and spin-32 Ising ferrimagnetic system with different anisotropies is studied within the mean-field theory based on Bogoliubov inequality for the Gibbs free energy. Global phase diagrams are obtained in the temperature-anisotropy plane. In particular we find first-order transition lines separating different low-temperature ordered phases (characterized by different values of the sublattice magnetizations) each one terminating at an isolated critical point. The existence and dependence of a compensation temperature on single-ion anisotropies is also investigated.

Keywords: Mixed-spin Ising model; Ferrimagnet; Single-ion anisotropy; Compensation point (search for similar items in EconPapers)
Date: 2001
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:296:y:2001:i:3:p:437-450

DOI: 10.1016/S0378-4371(01)00176-5

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