Magnetic entropy change and magnetic properties of LaFe11.5Si1.5 after controlling the Curie temperature by partial substitution of Mn and hydrogenation

被引：3
|
作者：
Fu, Bin [1 ]
Han, Jie [2 ]
机构：
[1] Tianjin Univ Technol, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China
[2] Tianjin Univ Technol, Coll Sci, Tianjin 300384, Peoples R China
来源：
CHINESE PHYSICS B | 2016年 / 25卷 / 02期
关键词：
magnetic refrigeration; Curie temperature (T-C); hydrogen absorption; magnetocaloric effect (MCE); METAMAGNETIC TRANSITION; COMPOUND; SYSTEM;
D O I：
10.1088/1674-1056/25/2/027501
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Magnetic properties and magnetic entropy changes of La(Fe1-xMnx)(11.5)Si1.5Hy compounds are investigated. Their Curie temperatures are adjusted to room temperature by partial Mn substitution for Fe and hydrogen absorption in 1-atm (1 atm = 1.01325 x 10(5) Pa) hydrogen gas. Under a field change from 0 T to 2 T, the maximum magnetic entropy change for La(Fe0.99Mn0.01)(11.5)Si1.5H1.61 is -11.5 J/kg. The suitable Curie temperature and large value of Delta S-m make it an attractive potential candidate for the room temperature magnetic refrigeration application.
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页数：4
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