Giant magnetic entropy change in manganese perovskites near room temperature

Authors
Zhong, W Chen, W Wang, JH Du, YW
Citation
W. Zhong et al., Giant magnetic entropy change in manganese perovskites near room temperature, CHIN PHYS L, 18(8), 2001, pp. 1114-1116
Citations number
13
Categorie Soggetti
Physics
Journal title
CHINESE PHYSICS LETTERS
ISSN journal
0256307X → ACNP
Volume
18
Issue
8
Year of publication
2001
Pages
1114 - 1116
Database
ISI
SICI code
0256-307X(200108)18:8<1114:GMECIM>2.0.ZU;2-A
Abstract
A large magnetic entropy change about twice as high as that of pure gadolin ium metal near room temperature has been discovered in manganese perovskite s La0.837Ca0.098Na0.038Mn0.987O3.00 (8.3 J(.)kg(-1.)K(-1), at 256 K) and La 0.822Ca0.096K0.043Mn0.974O3.00 (6.8 J(.)kg(-1.)K(-1), at 265 K) under a mag netic field of 1.5 T. This phenomenon indicates that manganese perovskites have potential applications for magnetic refrigerants in an extended temper ature range even near room temperature.