Giant magnetocaloric effect of MnAs1-xSbx

被引：1315

作者：

Wada, H ^{[1
]}

Tanabe, Y ^{[1
]}

机构：

[1] Kyoto Univ, Dept Mat Sci & Engn, Sakyo Ku, Kyoto 6068501, Japan

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 20期

关键词：

D O I：

10.1063/1.1419048

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A giant magnetocaloric effect was found in MnAs, which undergoes a first-order ferromagnetic to paramagnetic transition at 318 K. The magnetic entropy change caused by a magnetic field of 5 T is as large as 30 J/K kg at the maximum value, which exceeds that of conventional magnetic refrigerant materials by a factor of 2-4. The adiabatic temperature change reaches 13 K in a field change of 5 T. The substitution of 10% Sb for As reduces the thermal hysteresis and lowers the Curie temperature to 280 K, while the giant magnetocaloric properties are retained. (C) 2001 American Institute of Physics.

引用

页码：3302 / 3304

页数：3