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

doi:10.1088/1674-1056/25/2/027501

中国物理B ›› 2016, Vol. 25 ›› Issue (2): 27501-027501.doi: 10.1088/1674-1056/25/2/027501

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Magnetic entropy change and magnetic properties of LaFe_11.5Si_1.5 after controlling the Curie temperature by partial substitution of Mn and hydrogenation

Bin Fu(傅斌) and Jie Han(韩洁)

1. School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China;
2. College of Science, Tianjin University of Technology, Tianjin 300384, China

收稿日期:2015-08-22 修回日期:2015-09-26 出版日期:2016-02-05 发布日期:2016-02-05
通讯作者: Bin Fu E-mail:fubin80@126.com
基金资助:
Projct supported by the Science and Technology Development Fund of Higher Education of Tianjin, China (Grant No. 20130301) and the Tianjin Research Program of Application Foundation and Advanced Technology, China (Grant No. 14JCQNJC4000).

Magnetic entropy change and magnetic properties of LaFe_11.5Si_1.5 after controlling the Curie temperature by partial substitution of Mn and hydrogenation

Bin Fu(傅斌)¹ and Jie Han(韩洁)²

1. School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China;
2. College of Science, Tianjin University of Technology, Tianjin 300384, China

Received:2015-08-22 Revised:2015-09-26 Online:2016-02-05 Published:2016-02-05
Contact: Bin Fu E-mail:fubin80@126.com
Supported by:
Projct supported by the Science and Technology Development Fund of Higher Education of Tianjin, China (Grant No. 20130301) and the Tianjin Research Program of Application Foundation and Advanced Technology, China (Grant No. 14JCQNJC4000).

摘要/Abstract

摘要：

Magnetic properties and magnetic entropy changes of La(Fe_1-xMn_x)_11.5Si_1.5H_y 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=1.01325×10⁵ Pa) hydrogen gas. Under a field change from 0 T to 2 T, the maximum magnetic entropy change for La(Fe_0.99Mn_0.01)_11.5Si_1.5H_1.61 is -11.5 J/kg. The suitable Curie temperature and large value of Δ S_m make it an attractive potential candidate for the room temperature magnetic refrigeration application.

关键词: magnetic refrigeration, Curie temperature (T_C), hydrogen absorption, magnetocaloric effect (MCE)

Abstract:

Key words: magnetic refrigeration, Curie temperature (T_C), hydrogen absorption, magnetocaloric effect (MCE)

中图分类号: (Magnetocaloric effect, magnetic cooling)

75.30.Sg

75.50.-y (Studies of specific magnetic materials)

傅斌, 韩洁. Magnetic entropy change and magnetic properties of LaFe_11.5Si_1.5 after controlling the Curie temperature by partial substitution of Mn and hydrogenation[J]. 中国物理B, 2016, 25(2): 27501-027501.

Bin Fu(傅斌) and Jie Han(韩洁). Magnetic entropy change and magnetic properties of LaFe_11.5Si_1.5 after controlling the Curie temperature by partial substitution of Mn and hydrogenation[J]. Chin. Phys. B, 2016, 25(2): 27501-027501.

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Magnetic entropy change and magnetic properties of LaFe_11.5Si_1.5 after controlling the Curie temperature by partial substitution of Mn and hydrogenation

Magnetic entropy change and magnetic properties of LaFe_11.5Si_1.5 after controlling the Curie temperature by partial substitution of Mn and hydrogenation

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