Hysteresis behaviors of the binary alloy system represented by the formula A c B 1−c have been investigated within the framework of EFT. The system consists of type A atoms (spin-1) with concentration c and type B atoms (spin-1/2) with concentration 1 − c. After giving the phase diagrams, we focused on the different type of hysteresis behaviors in the system. Especially, the mechanisms giving rise to double hysteresis behavior have been explained, which appear at large negative values of the crystal field and low temperatures. It has been observed that binary alloy system could exhibit DH behavior in region 0 < c < 0.557. Besides, dependence of hysteresis loop area, coercive field and remanent magnetization on the concentration has been investigated.
In this study, hysteresis characteristics of the generalized spin-S binary alloy represented by the formula A c B 1−c have been investigated within the framework of effective field approximation. The binary system consists of type A (spin-S) and type B (spin-S) atoms which are randomly distributed on a honeycomb lattice. Both integer and half-integer spin models of two magnetic atom types are examined. By detailed investigation on hysteresis loops, multiple hysteresis behaviors are obtained for a given set of Hamiltonian parameters. Besides, the quantities of hysteresis characteristics as the hysteresis loop area, remanent magnetization, and coercive field have been investigated as functions of concentration.
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