Large Magnetic Entropy Change in Perovskite La0.67-x Gdx Ca0.33 MnO3
HUANG He, GUO Zai-bing, ZHANG Jian-rong, DU You-wei
National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093
Large Magnetic Entropy Change in Perovskite La0.67-x Gdx Ca0.33 MnO3
HUANG He;GUO Zai-bing;ZHANG Jian-rong;DU You-wei
National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093
关键词 ：
75.30.-m ,
75.50.-y
Abstract ： Magnetic entropy change larger than that of gadolinium has been observed in perovskite manganese oxides La0.67-x Gdx Ca0.33 MnO3 (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.
Key words ：
75.30.-m
75.50.-y
出版日期: 1997-10-01
:
75.30.-m
(Intrinsic properties of magnetically ordered materials)
75.50.-y
(Studies of specific magnetic materials)
引用本文:
HUANG He;GUO Zai-bing;ZHANG Jian-rong;DU You-wei. Large Magnetic Entropy Change in Perovskite La0.67-x Gdx Ca0.33 MnO3 [J]. 中国物理快报, 1997, 14(10): 786-788.
0.67-x Gdx Ca0.33 MnO3 . Chin. Phys. Lett., 1997, 14(10): 786-788.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y1997/V14/I10/786
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