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使用电弧炉熔炼制备了LaDy0.1Fe11.4T0.1Si1.5(T=Mn,Fe,Co)系列合金.XRD分析表明该系列合金具有NaZn13型立方单相晶体结构,空间群为Fm-3c.磁性测量表明:随着替代原子T原子半径的减小,合金的居里温度(TC)逐渐增大.在外场变化AB=1.5 T时,该系列合金的最大磁熵变分别为12.3,25.0,11.4 J/kg·K.

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