Table-Like Large Magnetocaloric Effect in the Misch Metal RSi Compound
Table-Like Large Magnetocaloric Effect in the Misch Metal RSi Compound
复制标题
混合稀土RSi化合物中的表状大磁热效应
DOI：
10.1088/0256-307x/37/1/017501
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发表时间：
2020
影响因子：
3.5
通讯作者：
He Shu-Li
中科院分区：
文献类型：
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作者：
Liu Ruo-Shui;Liu Jun;Wang Li-Chen;Li Zheng-Rui;Yu Xiang;Mi Yan;Dong Qiao-Yan;Li Kai;Li Dan-Li;Lv Chen-Hui;Liu Li-Feng;He Shu-Li
研究了稀土RSi（R = Ce，Pr，Nd）化合物的磁性和磁热效应。在12 K和38 K发现了两个相变。磁场变化产生大的MCE，磁熵变（ΔS）曲线出现两个峰值，分别对应于两个相变温度。在0-2 T和0-5 T的磁场范围内，磁熵变（ΔS）的最大值分别为−5.1 J/（kg·K）和−9.3 J/（kg·K）。MM的大ΔS和超低的价格使（MM）Si成为埃里克森循环中具有竞争力的低温磁制冷剂候选者。
Magnetic properties and the magnetocaloric effect (MCE) of the RSi (R = Ce, Pr, Nd) compounds made of Misch metal (MM) are investigated. Two transitions are found at 12 K and 38 K. Field variation generated large MCE and two peaks are found in the magnetic entropy change (ΔS) curves, which correspond to the two transition temperatures. The maximum values of the magnetic entropy changes (ΔS) are found to be −5.1 J/(kg⋅K) and −9.3 J/(kg⋅K) for the field ranges of 0–2 T and 0–5 T, respectively. The large ΔS as well as ultra-low price of MM make (MM)Si a competitive magnetic refrigerant candidate for low temperature in Eriksson cycle.