Ferrimagnetic Characteristics and Spin Compensation Temperatures of a Mixed Spin-3 and Spin-5/2 Blume–Capel Model


  • I.A. Obaid Department of Physics, College of Science, University of Thi-Qar
  • H.K. Mohamad College of Science, Al Muthanna University
  • Sh.D. Al-Saeedi Department of Physics, College of Science, University of Thi-Qar




mixed spin Blume–Capel model, magnetic crystal field, phase transitions, reentrant behavior, spin compensation temperature


We study the molecular mean-field theory (MMFT) based on the Gibbs–Bogolyubov free energy function of a ferrimagnetic with mixed spin-3 and spin-5/2 for various magnetic crystal fields in the Blume–Capel model. We have evaluated the free energy depending on the trial Hamiltonian operator. By minimizing the free energy of the present system, we have obtained the characteristic features of the longitudinal magnetizations, compensation temperatures, and re-entrant behaviors in the ranges of low temperatures. In particular, we study the effect of magnetic anisotropies on the critical phenomena for the proposed model. The sublattice magnetization dependence of the free energy function has been discussed as well. Our results predict the existence of multiple spin compensation points in the disordered Blume–Capel system for a square lattice.


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How to Cite

Obaid, I., Mohamad, H., & Al-Saeedi, S. (2022). Ferrimagnetic Characteristics and Spin Compensation Temperatures of a Mixed Spin-3 and Spin-5/2 Blume–Capel Model. Ukrainian Journal of Physics, 67(9), 695. https://doi.org/10.15407/ujpe67.9.695



Physics of magnetic phenomena and physics of ferroics