Abstract

In this work, using the Monte Carlo study, we illustrated the magnetic and magnetocaloric properties of the L-graphdiyne system with mixed 5/2 and 3/2 spins. We obtain magnetizations and magnetic susceptibilities of the system. The Neel temperature and the reduced compensation temperature are determined. The magnetic entropy changes of L-graphdiyne for several reduced external magnetic fields and the number L of hexagons are displayed. The relative cooling power has been calculated and discussed. Magnetic hysteresis cycles for different L = 1, 2, 3, and T = 2 demonstrate that the magnetization saturation increases with increasing L. In addition, the reduced magnetic coercive field increases with decreasing reduced exchange interaction r. Furthermore, the reduced magnetic coercive field increases with increasing values of the exchange coupling interactions p. In particular, super-paramagnetic behavior has been found for L = 1, due to the low values of the reduced magnetic coercive field.

中文翻译：

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L-石墨二炔结构的磁性和磁热性质：蒙特卡罗模拟

摘要

在这项工作中，我们利用蒙特卡罗研究，说明了具有混合 5/2 和 3/2 自旋的 L-石墨二炔系统的磁性和磁热特性。我们获得了系统的磁化强度和磁化率。确定尼尔温度和降低的补偿温度。显示了几种减小的外部磁场下 L-石墨二炔的磁熵变化和六边形的数量 L。计算并讨论了相对冷却功率。不同L = 1、2、3和T = 2的磁滞循环表明，磁化饱和度随着L的增加而增加。此外，减少的矫顽磁场随着减少的交换相互作用r的减少而增加。此外，减小的矫顽磁场随着交换耦合相互作用p值的增加而增加。特别是，由于矫顽磁场值较低，L = 1 时发现了超顺磁行为。