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MONTE CARLO SIMULATIONS OF MAGNETOCALORIC EFFECT OF HEUSLER SHAPE MEMORY Ni-Mn-Ga ALLOYS

机译:Heusler形状记忆Ni-Mn-Ga合金的磁热效应的蒙特卡罗模拟

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摘要

A three-dimensional Monte Carlo model has been used for theoretical description of magnetic and magnetocaloric properties of Ni_(2+x)Mn_(1-x)Ga (0.18≤x≤0.27) Heusler alloys undergoing first order magnetostructural phase transitions. By the help of theoretical model the temperature dependences of the magnetization, heat capacity, entropy and the isothermal entropy change for magnetic field variation from 0 to 5 T are obtained. All quantities are in good agreement with the available experimental data.
机译:三维蒙特卡洛模型已用于Ni_(2 + x)Mn_(1-x)Ga(0.18≤x≤0.27)Heusler合金经历一阶磁结构相变的磁和磁热性质的理论描述。借助理论模型,获得了磁场强度从0到5 T变化的磁化强度,热容量,熵和等温熵变的温度依赖性。所有数量均与可用的实验数据高度吻合。

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