Magnetocaloric effect and magnetic properties of La0.9Ce0.1(Fe0.99Mn0.01)11.6Si1.4H1.6 compound

被引：2
作者：
王超伦 [1 ]
龙毅 [1 ]
马涛 [1 ]
张虎 [1 ]
机构：
[1] School of Materials Science and Engineering,University of Science and Technology Beijing
来源：
Journal of Rare Earths | 2011年 / 29卷 / 05期
基金：
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词：
homogeneity of hydrogen absorption; magnetocaloric effect; magnetic entropy change; rare earths;
D O I：
暂无
中图分类号：
TM271 [磁性材料、铁磁材料];
学科分类号：
0805 ; 080502 ; 080801 ;
摘要：
Magnetocaloric effect and magnetic properties of La0.9Ce0.1(Fe0.99Mn0.01)11.6Si1.4 and its hydride La0.9Ce0.1(Fe0.99Mn0.01)11.6Si1.4H1.6 were investigated. The Curie temperature of La0.9Ce0.1(Fe0.99Mn0.01)11.6Si1.4 was increased by hydrogen absorption. XRD patterns showed that the structure of La0.9Ce0.1(Fe0.99Mn0.01)11.6Si1.4H1.6 remained NaZn13-type. The Curie temperature (TC) of the sample was increased from 174 K to 331 K. The homogeneity of the hydrogen absorption for La0.9Ce0.1(Fe0.99Mn0.01)11.6Si1.4H1.6 was proven very well by the random measurement of DSC. The magnetic entropy △SM of La0.9Ce0.1(Fe0.99Mn0.01)11.6Si1.4H1.6 had peak at 326 K. The peak value of-△SM-was 12.3 and 7.8 J/(kg.K) under magnetic field change of 0-2 T and 0-1 T,respectively,which was comparable with Gd5Si2Ge2. The negative slope and inflection point of the Arrott curve indicated that the first-order magnetic transition of La0.9Ce0.1(Fe0.99Mn0.01)11.6Si1.4 was reserved after hydrogen absorption.
引用
收藏
页码：474 / 476
页数：3
相关论文
共 6 条
  • [1] Rare Earths and Magnetic Refrigeration[J]. Karl A Gschneidner,Vitalij K Pecharsky.Journal of Rare Earths. 2006(06)
  • [2] Application of magnetic refrigeration and its assessment
    Kitanovski, Andrej
    Egolf, Peter W.
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2009, 321 (07) : 777 - 781
  • [3] Large magnetocaloric effects in NaZn13-type La(FexSi1-x)13 compounds and their hydrides composed of icosahedral clusters
    Fujieda, S.
    Fujita, A.
    Fukamichi, K.
    [J]. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, 2003, 4 (04) : 339 - 346
  • [4] Magnetocaloric effect and magnetic refrigeration
    Pecharsky, Vitalij K.
    Gschneidner Jr., Karl A.
    [J]. Journal of Magnetism and Magnetic Materials, 1999, 200 (01): : 44 - 56
  • [5] Great magnetic entropy change in La（Fe, M）13 （M=Si, Al） with Co doping. Hu Fengxia, Shen Baogen, Sun Jirong, et al. Chinese Physics . 2000
  • [6] Magnetocaloric effects in the La（Fe,Si）13 intermetallics doped by different elements. Jia L,Sun J R,Shen J. Applied Physics . 2009
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