Abstract In the present article a magnetic solid exhibiting the phase transition from the high-temperature ferromagnetic (FM) to the low-temperature antiferromagnetic (AFM) phase is considered. The Landau theory of phase transitions is used for the analysis of inverse magnetocaloric effect (MCE) observed below the phase transition temperature. The magnetic-field-induced shift of the phase transition temperature has been calculated and the dependence of the phase transition field on the temperature of solid has been computed; the quantitative agreement between the theoretical results and the experimental data obtained in the recent experiments with Fe49Rh51 alloy has been achieved. The magnetic-field-induced entropy change and refrigerant capacity of Fe49Rh51 alloy have been calculated. Reasonable agreement between theoretical results and experimental data has been demonstrated. The dependence of characteristics of MCE on the spin-exchange parameter has been shown. The MCE in the artificial AFM structures has been discussed.

中文翻译：

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经历铁磁 - 反铁磁相变的固体中的逆磁热效应：Landau 理论应用于 Fe-Rh 合金

摘要 在本文中，研究了一种磁性固体，该固体表现出从高温铁磁 (FM) 相到低温反铁磁 (AFM) 相的相变。相变的朗道理论用于分析在相变温度以下观察到的逆磁热效应 (MCE)。计算了相变温度的磁场感应位移，并计算了相变场对固体温度的依赖性；在最近的 Fe49Rh51 合金实验中，理论结果与实验数据之间的定量一致性已经实现。计算了Fe49Rh51合金的磁场致熵变和制冷剂容量。已证明理论结果与实验数据之间存在合理的一致性。已经显示了 MCE 特性对自旋交换参数的依赖性。已经讨论了人工 AFM 结构中的 MCE。