Giant magnetocaloric effect in Gd-5(Si2Ge2)

被引：3981

作者：

Pecharsky, VK ^{[1
]}

Gschneidner, KA ^{[1
]}

机构：

[1] IOWA STATE UNIV SCI & TECHNOL,DEPT MAT SCI & ENGN,AMES,IA 50011

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.78.4494

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An extremely large magnetic entropy change has been discovered in Gd-5(Si2Ge2) when subjected to a change in the magnetic field. It exceeds the reversible (with respect to an alternating magnetic field) magnetocaloric effect in any known magnetic material by at least a factor of 2, and it is due to a first order [ferromagnetic (I) <-> ferromagnetic (II)] phase transition at 276 K and its unique magnetic field dependence.

引用

页码：4494 / 4497

页数：4