Experimental study of the magnetocaloric effect in Gd5Sn2Si2 compound

被引：9

作者：

Campoy, JCP

Plaza, EJR

Carvalho, AMG

Coelho, AA

Gama, S

von Ranke, PJ

机构：

[1] Univ Estadual Campinas, UNICAMP, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil

[2] UERJ, DEQ, IF, BR-20550013 Xavier, RJ, Brazil

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷

关键词：

magnetocaloric effect;

D O I：

10.1016/j.jmmm.2003.12.1010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report an experimental study of the magnetocaloric effect (MCE) in the Gd5Sn2Si2 compound. The MCE DeltaS(mag)(T) as a function of temperature is obtained from magnetization M(H,T) measurements up to 5T. A second order magnetic transition is observed at T-C similar to 220 K with DeltaS(mag) = 4.5 J/mol K. T-C and transition width DeltaT(C) depends on thermal treatments for homogeneity and crystallographic ordering. At low temperatures, T similar to 87 K, we also observed a second peak in DeltaS(mag) which is associated with the presence of antiferromagnetic Gd5Sn4-xSix. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：2375 / 2376

页数：2

共 4 条

[1] Giant magnetocaloric effect in Gd-5(Si2Ge2) [J].