Direct measurement of the "giant" adiabatic temperature change in Gd5Si2Ge2

被引：267

作者：

Giguère, A

Foldeaki, M

Gopal, BR

Chahine, R

Bose, TK

Frydman, A

Barclay, JA

机构：

[1] Univ Quebec Trois Rivieres, Inst Rech Hydrogene, Trois Rivieres, PQ, Canada

[2] Univ Victoria, Victoria, BC, Canada

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.83.2262

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Direct adiabatic temperature change as well as magnetic measurements were carried out on two different samples of Gd5Si2Ge2 composition for which calculations predicted a "giant" magnetocaloric effect (MCE). While magnetic measurements well reproduce published values, serving the basis for the predictions, direct adiabatic temperature change measurements show a significantly smaller MCE. The discrepancy can be interpreted on the basis of the thermodynamics of first order magnetic transitions.

引用

页码：2262 / 2265

页数：4

共 19 条

[1] Anomalously high entropy change in FeRh alloy [J].