Magnetocaloric effect in Ho2In over a wide temperature range
Magnetocaloric effect in Ho2In over a wide temperature range
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DOI：
10.1063/1.3130090
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发表时间：
2009-05
影响因子：
4
通讯作者：
Qiang Zhang;J. Cho;B. Li;Wei-Zhi Hu;Z. Zhang
中科院分区：
文献类型：
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作者：
Qiang Zhang;J. Cho;B. Li;Wei-Zhi Hu;Z. Zhang
化合物 Ho(2)In 表现出两个连续的磁相变：T(SR)=32 K 时的自旋重定向转变和 T(C)=85 K 时的磁有序转变。对于 5 T 的磁场变化，T(SR) 和 T(C) 处的最大可逆 -Delta S(M) 值分别为 6.3 和 11.2 J/kg K。这两个具有相同符号的 -Delta S(M) 峰部分重叠，其中导致较宽的温度区间和明显的磁热效应。 Ho(2)In 的结果表明，具有连续 SR 和磁有序转变的材料可能构成一类重要的新型磁性制冷剂，因为它们的工作温度范围比传统制冷剂材料更宽。
The compound Ho(2)In exhibits two successive magnetic phase transitions: a spin-reorientation transition at T(SR)=32 K and a magnetic-ordering transition at T(C)=85 K. The maximum reversible -Delta S(M) values are 6.3 and 11.2 J/kg K at T(SR) and T(C), respectively, for a field change of 5 T. These two -Delta S(M) peaks with the same sign are partly overlapping, which results in a wide temperature interval with appreciable magnetocaloric effect. The results on Ho(2)In indicate that materials with successive SR and magnetic-ordering transitions may constitute an important new class of magnetic refrigerants since they work in a wider temperature range than the conventional refrigerant materials.