Large Magnetic Entropy Change in Perovskite La0.67-xGdxCa0.33MnO3

Chin. Phys. Lett.

1997, Vol. 14

Issue (10): 786-788 DOI:

Original Articles

Large Magnetic Entropy Change in Perovskite La_0.67-xGd_xCa_0.33MnO₃

HUANG He;GUO Zai-bing;ZHANG Jian-rong;DU You-wei

National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093

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HUANG He, GUO Zai-bing, ZHANG Jian-rong et al 1997 Chin. Phys. Lett. 14 786-788

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Abstract Magnetic entropy change larger than that of gadolinium has been observed in perovskite manganese oxides La_0.67-xGd_xCa_0.33MnO₃ (x =0, 0.1, 0.15) with fixed carrier concentration. The large magnetic entropy change produced by the abrupt reduction of magnetization is attributed to the anomalous thermal expansion just at the Curie temperature. This phenomenon indicates potential applications for magnetic refrigerants in an extended high temperature range.

Keywords: 75.30.-m 75.50.-y

Published: 01 October 1997

PACS:	75.30.-m	(Intrinsic properties of magnetically ordered materials)
	75.50.-y	(Studies of specific magnetic materials)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1997/V14/I10/0786

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