Large magnetic-entropy change above room temperature in the colossal magnetoresistance La0.7Sr0.3Mn1-xNixO3 materials

被引：24

作者：

Choudhury, MA

Akhter, S

Minh, DL

Tho, ND

Chau, N

机构：

[1] Vietnam Natl Univ, Ctr Mat Sci, Hanoi, Vietnam

[2] Vietnam Natl Univ, Dept Solid State Phys, Hanoi, Vietnam

[3] Atom Energy Ctr, Dhaka 1000, Bangladesh

来源：

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

关键词：

magnetic refrigeration; manganites; magnetic measurements; perovskite manganites; phase transitions;

D O I：

10.1016/j.jmmm.2003.12.078

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic and magnetocaloric properties of the series La0.7Sr0.3Mn1-xNixO3 (x = 0.00, 0.01, 0.02, 0.03, and 0.05) have been investigated. The X-ray diffraction analysis shows that all perovskites studied have the rhombohedral structure. The field-cooled and zero-field-cooled thermomagnetic curves measured at low field show that there is spin-glass (or cluster-glass)-like state in the samples. It is found that the magnetic-entropy change \DeltaS(max)\ has reached the highest value of 3.54 J/kg K at 13.5 kOe for the composition with x = 0.02. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：1295 / 1297

页数：3