Abstract In this paper, the thermodynamic, magnetic properties and magnetocaloric effect of three-layers thin films superlattice(A,B,C) formed by (1,3/2,2) mixed spins were investigated via Monte Carlo study. The influence of intralayer, interfacial exchange interactions, thickness of the film and temperature on the magnetization, magnetic susceptibility, internal energy and magnetic specific heat was investigated. The grounds states in various parameters plane are given. The results show that the intralayer and the interfacial interface the exchange couplings, the thickness of the layer and the concentration of atoms have important influences on the magnetization, the susceptibility, the internal energy and the specific heat of the system. The phase diagrams in various parameters planes are obtained and have different impact on critical temperature of the system. The "double peak" and "triple peak" in thermal magnetic susceptibility, magnetic specific heat, normalized magnetic entropy change are obtained. The magnetic hysteresis cycle and normalized magnetic entropy change have been obtained under the effect of couplings and the thickness of the film. In addition, a number of interesting phenomena have been found, such as: double peak and triple peak in susceptibility and specific heat curves, resulting from the difference in temperature dependence of three sublattice magnetization.

中文翻译：

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无限层薄膜超晶格的磁性和热力学性质：蒙特卡罗研究

摘要 本文通过蒙特卡罗研究研究了由(1,3/2,2)混合自旋形成的三层薄膜超晶格(A,B,C)的热力学、磁性和磁热效应。研究了层内、界面交换相互作用、薄膜厚度和温度对磁化强度、磁化率、内能和磁比热的影响。给出了各种参数平面的基态。结果表明，层内和界面界面的交换耦合、层的厚度和原子浓度对系统的磁化强度、磁化率、内能和比热有重要影响。得到各参数平面的相图，对系统临界温度有不同的影响。得到热磁化率、磁比热、归一化磁熵变的“双峰”和“三峰”。得到了耦合作用和薄膜厚度作用下的磁滞循环和归一化磁熵变。此外，还发现了许多有趣的现象，例如：磁化率和比热曲线中的双峰和三峰，这是由三个亚晶格磁化的温度依赖性差异引起的。得到了耦合作用和薄膜厚度作用下的磁滞循环和归一化磁熵变。此外，还发现了许多有趣的现象，例如：磁化率和比热曲线中的双峰和三峰，这是由三个亚晶格磁化的温度依赖性差异引起的。得到了耦合作用和薄膜厚度作用下的磁滞循环和归一化磁熵变。此外，还发现了许多有趣的现象，例如：磁化率和比热曲线中的双峰和三峰，这是由三个亚晶格磁化的温度依赖性差异引起的。