Structure and Magnetocaloric Effect in Tb(Co1-xSnx)2 Alloys

被引：0

作者：

庄应烘 ^{[1
]}

邓健秋 ^{[1
]}

李均钦 ^{[2
]}

周开文 ^{[1
]}

朱其明 ^{[1
]}

机构：

[1] Institute of Materials Science, Guangxi University, Nanning 530004, China 2. Department of Materials Science and Engineering, Shenzhen University, Shenzhen Key Laboratory of Special Functional Materi

来源：

JournalofRareEarths | 2006年 / 03期

关键词：

transition metal compounds; magnetocaloric materials; rare earths;

D O I：

暂无

中图分类号：

TM27 [磁性材料、铁氧体];

学科分类号：

0805 ; 080502 ; 080801 ;

摘要：

The phases and magnetocaloric effect in the alloys Tb（Co 1-xSnx）2 with x=0, 0.025, 0.050, 0.075, 0.100 were investigated by X-ray diffraction analysis and magnetization measurement. The substitution of Sn in TbCo2 was limited. The cubic MgCu2-type structure for the sample of TbCo2 was confirmed by the results of X-ray powder diffraction and the rest samples consist of the TbCo2 phase mainly, together with some TbCo3 and Tb5Sn3 impurity phases. The impurity phases increase with the increase of Sn contents. The magnetic phase transition in all samples keeps second-order transition. TC increases slightly by Sn substitution from 230 K of the alloy with x=0 to 233 K of the alloy with x=0.050 and then a slight decrease for higher concentration of x. The maximum magnetic entropy change in the samples Tb（Co 1-xSnx）2 with x=0, 0.025, 0.050, 0.075 are 3.44, 2.29, 1.64, 1.16 J·kg -1·K -1, respectively, with the applied field change from 0 to 2.0 T.

引用

页码：337 / 340

页数：4