论文标题
现场稀释对具有非等效平面的ISIN SPIN-1/2三层三角形铁磁体的补偿的影响
Effects of site dilution on Compensation in Ising Spin-1/2 trilayered triangular Ferrimagnets with non-equivalent planes
论文作者
论文摘要
使用带有Metropolis算法的蒙特卡洛模拟，研究了带有Spin-1/2的磁性和热力学行为，研究了带有具有猝灭非磁性杂质的三角形单层的三层铁磁系统。两种不同的理论原子A和B构成了不同配置的ABA和AAB类型。像原子（A-A和B-B）一样，相互磁性相互作用，而与原子（A-B）不同。只有A层被随机剥离，稀释百分比在5％至45％之间。这种稀释的磁性薄系统表现出磁补偿，这取决于杂质的浓度。详细讨论了与磁补偿现象的发生以及现场稀释效应有关的哈密顿参数空间中的相图。特别注意补偿温度对非磁杂质浓度的数学依赖性。根据非磁杂质的浓度，补偿和临界点随着不同的铁磁行为之间的平衡磁行为而变化。对于耦合强度的每种组合，具有高于阈值的杂质浓度值的值，在先前不存在的情况下会出现补偿。建议的数学公式显示了阈值杂质浓度如何依赖于哈密顿参数。
Using Monte Carlo simulations with the Metropolis algorithm, the magnetic and thermodynamic behaviours of a spin-1/2, trilayered ferrimagnetic system on triangular monolayers with quenched nonmagnetic impurities are studied. Two different theoretical atoms, A and B, make up the ABA and AAB types of distinct configurations. Like atoms (A-A and B-B) interact ferromagnetically, while unlike atoms (A-B) interact antiferromagnetically. Only the A-layers are randomly site-diluted with dilution percentages ranging from 5% to 45%. Such diluted magnetic thin systems exhibit magnetic compensation which depends sensitively on the concentration of impurities. The phase diagram in the Hamiltonian parameter space related to the occurrence of magnetic compensation phenomenon and the effect of site dilution is discussed in detail. Special attention is given to the mathematical dependencies of compensation temperature on the concentration of nonmagnetic impurities. Depending upon the concentration of nonmagnetic impurities, the compensation and critical points shift with the equilibrium magnetic behaviours changing between distinct ferrimagnetic behaviours. For each combination of the coupling strengths, with values of the impurity concentration above a threshold, compensation appears where previously was absent. Suggested mathematical formulae show how threshold impurity concentration relies on Hamiltonian parameters.
