Crystal Structure and Curie Temperature of (Mn1-xFex)5Sn3 Alloy

被引：0

作者：

Zhang Peng ^{[1
]}

Hou Xueling ^{[1
]}

Hu Xinghao ^{[1
]}

Xu Hui ^{[1
]}

Ni Jiansen ^{[1
]}

Zhou Bangxin ^{[1
]}

机构：

[1] Shanghai Univ, Inst Mat Res, Shanghai 200072, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2010年 / 39卷 / 03期

关键词：

(Mn1-xFex)(5)Sn-3 alloy; crystal structure; Curie temperature; magnetic refrigeration; MAGNETIC-ENTROPY CHANGE; ROOM-TEMPERATURE;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

(Mn1-xFex)(5)Sn-3 (x=0.1-0.5) alloys were prepared by powder metallurgy method with magnetic field pressing and sintering. The crystal structure, Curie temperature and magnetic entropy change of the alloys were studied. XRD patterns reveal that all samples of this system maintain a hexagonal InNi2-type structure with space group P6(3)/mmc. The lattice parameter and cell volumes of the (Mn1-xFex)(5)Sn-3 alloys decrease with x increasing by calculation, while the Curie temperature of these alloys increases almost linearly and is tunable continually from 244 K to 391 K by M-T curves. The Curie temperature of (Mn0.70Fe0.30)(5)Sn-3 is about 295 K close to room temperature, and the maximum magnetic entropy change is 0.87 (kg.K)(-1) with a field change from 0 to 1.5 T. The curve of magnetic entropy change of (Mn0.70Fe0.30)(5)Sn-3 is flat in a wide temperature range. It is indicated that the (Mn1-xFex)(5)Sn-3 alloy is a suitable candidate with low cost for Ericsson cycle.

引用

页码：549 / 551

页数：3

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