Table of Contents
ISRN Condensed Matter Physics
Volume 2013 (2013), Article ID 759450, 6 pages
http://dx.doi.org/10.1155/2013/759450
Research Article

The Possibility of Many Compensation Points in a Mixed-Spin Ising Ferrimagnetic System

1College of Science, Al-Muthanna University, Samawa, Iraq
2Voronezh State University, Universitetskaya pl. 1, Voronezh 394006, Russia

Received 4 April 2013; Accepted 9 May 2013

Academic Editors: V. Kochereshko, S. Krukowski, R. Rossmanith, and S. Wang

Copyright © 2013 Hadey K. Mohamad. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The magnetic properties of a ferrimagnetic mixed spin-3/2 and spin-5/2 Ising model with different anisotropies are investigated by using the mean-field approximation (MFA). In particular, the effect of magnetic anisotropies on the compensation phenomenon, acting on A-atoms and B-ones for the mixed-spin model, has been considered in a zero field. The free energy of a mixed-spin Ising ferrimagnetic system from MFA of the Hamiltonian is calculated. By minimizing the free energy, we obtain the equilibrium magnetizations and the compensation points. The phase diagram of the system in the anisotropy dependence of transition temperature has been discussed as well. Our results of this model predict the existence of many (two or three) compensation points in the ordered system on a simple cubic lattice.