Large magnetic entropy change in Cu-doped manganites

被引：62
|
作者：
Phan, MH
Peng, HX
Yu, SC
Tho, ND
Chau, N
机构：
[1] Univ Bristol, Dept Aerosp Engn, Bristol BS8 1TR, Avon, England
[2] Chungbuk Natl Univ, Dept Phys, Cheongju 361763, South Korea
[3] Natl Univ Hanoi, Ctr Mat Sci, Hanoi, Vietnam
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 285卷 / 1-2期
基金：
新加坡国家研究基金会;
关键词：
magnetic entropy; magnetic refrigeration; Cu-doped manganites;
D O I：
10.1016/j.jmmm.2004.07.041
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetic entropy change above 300 K. which is larger than that of gadolinium (Phys. Rev, B 57 (1998) 3478), has been observed in a Cu-doped manganites of La0.7Sr0.3Mn1-xCuxO3 (x = 0.05, 0.1). The large magnetic entropy change originated from a sharp magnetization jump is associated with a first-order crystallographic phase transition of the sample near the Curie temperature. These results suggest that the present Cu-doped manganites are suitable materials for magnetic refrigerants in the room temperature magnetic-refrigeration technology. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：199 / 203
页数：5
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