Anomalies in the multicritical behavior of staggered magnetic and direct magnetic susceptibilities of iron group dihalides

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:324

Article

Gulpinar, Gul¹  Vatansever, Erol¹ 

[1] Dokuz Eylul Univ, Dept Phys, TR-35160 Izmir, Turkey

关键词: Tricritical point;    Double critical end point;    Critical end point;    Re-entrance;    Staggered susceptibility;    Direct susceptibility;   

DOI  :  10.1016/j.jmmm.2012.06.013

来源: Elsevier

【 摘 要 】

The temperature dependencies of magnetic response functions of the anhydrous dihalides of iron-group elements are examined in the neighborhood of the multicritical points (tricritical point, critical end point, and double critical end point) within molecular field approximation. Our findings reveal the fact that the spin -1/2 metamagnetic Ising system exhibits anomalies in the temperature dependence of the magnetic response functions for r < 0.3. In addition, we extensively investigated how an inter- and intra-layer exchange interaction ratio influence the magnetic response properties of these systems. Finally, a comparison has been made with related works. (C) 2012 Elsevier BY. All rights reserved.

【 授权许可】

Free