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Phase diagrams and magnetic properties of a ferrimagnetic Ising bilayer superlattice: A Monte Carlo study
Journal of Magnetism and Magnetic Materials ( IF 2.7 ) Pub Date : 2018-11-01 , DOI: 10.1016/j.jmmm.2018.06.011
Dan Lv , Wei Wang , Jin-ping Liu , De-qiang Guo , San-xi Li

Abstract Monte Carlo simulation has been used to study the magnetic and thermodynamic properties of a ferrimagnetic mixed spin-1 and spin-3/2 Ising bilayer superlattice system on the honeycomb structure. The ground state phase diagrams of the system have been obtained for different single-ion anisotropies and exchange couplings. The system exhibits characteristic critical behaviors such as compensation points, the first- and second-order phase transition points as well as the tricritical points. The effects of the single-ion anisotropies and the exchange couplings on the magnetization, the susceptibility, the internal energy, the specific heat and the hysteresis loops are discussed in detail. Lots of interesting magnetic phenomena have been found, originating from the competitions among the anisotropies, the exchange couplings, the temperature and the external magnetic field. In particular, multiple cycle hysteresis loops behaviors such as the double and triple hysteresis loops have been discovered. Our results are in excellent agreement with previous theoretical studies.

中文翻译:

亚铁磁性 Ising 双层超晶格的相图和磁性:蒙特卡罗研究

摘要 蒙特卡罗模拟已被用于研究蜂窝结构上亚铁磁性混合自旋 1 和自旋 3/2 Ising 双层超晶格系统的磁性和热力学性质。得到了不同单离子各向异性和交换耦合的系统基态相图。该系统表现出特征临界行为,例如补偿点、一阶和二阶相变点以及三临界点。详细讨论了单离子各向异性和交换耦合对磁化强度、磁化率、内能、比热和磁滞回线的影响。发现了许多有趣的磁现象,起源于各向异性、交换耦合、温度和外部磁场。特别是,已经发现了多周期滞后回线行为,例如双和三回滞后回线。我们的结果与以前的理论研究非常一致。
更新日期:2018-11-01
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