Reduction in hysteresis losses and large magnetic entropy change in the B-doped La(Fe, Si)(13) compounds
Reduction in hysteresis losses and large magnetic entropy change in the B-doped La(Fe, Si)(13) compounds
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DOI：
10.1063/1.3349325
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发表时间：
2010-04
影响因子：
3.2
通讯作者：
Jun Shen;Fang Wang;Jinliang Zhao;Jianfeng Wu;M. Gong;F. Hu;Yangxiang Li;Jirong Sun;B. Shen-B
中科院分区：
文献类型：
--
作者：
Jun Shen;Fang Wang;Jinliang Zhao;Jianfeng Wu;M. Gong;F. Hu;Yangxiang Li;Jirong Sun;B. Shen-B
研究了B的加入对La（Fe，Si）13磁熵变ΔSM和磁滞损耗的影响。LaFe 11.9Si 1.1、LaFe 11.5B 0.4Si 1.1、LaFe 11.5Si 1.5和LaFe 11.0B 0.5Si 1.5的ΔSM在居里温度TC下的最大值分别为27.0、26.1、23.7和21.2 J/kg K。LaFe_（11.9）Si_（1.1）和LaFe_（11.5）Si_（1.5）在TC附近的最大磁滞损耗分别为43和21 J/kg，而B掺杂化合物几乎没有磁滞现象。结果表明，在NaZn_（13）型La（Fe，Si）_（13）化合物中加入B可以同时获得较大的ΔSM和较小的磁滞损耗。
The effect of the B-addition on magnetic entropy change ΔSM and hysteresis loss in La(Fe,Si)13 is studied. The maximal values of ΔSM for LaFe11.9Si1.1, LaFe11.5B0.4Si1.1, LaFe11.5Si1.5, and LaFe11.0B0.5Si1.5 are found to be 27.0, 26.1, 23.7, and 21.2 J/kg K at Curie temperature TC for a field change in 0–5 T, respectively. The maximal hysteresis losses around TC are 43 and 21 J/kg for LaFe11.9Si1.1 and LaFe11.5Si1.5, respectively, while almost no magnetic hysteresis is observed for the B-doped compounds. Our result reveals that a large ΔSM and a small hysteresis loss can be simultaneously achieved in NaZn13-type La(Fe,Si)13 compounds by the addition of B.