Magnetocaloric effect in La0.8-xNdxNa0.2MnO3

Hou DL; Yue CX; Bai Y; Liu QH; Zha XY; Tang GD

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Magnetocaloric effect in La0.8-xNdxNa0.2MnO3

机译：La0.8-xNdxNa0.2MnO3中的磁热效应

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Single-phase polycrystalline samples of La0.8-xNdxNa0.2MnO3 (x = 0.00, 0.05, 0.10, 0.15 and 0.20) were prepared by the sol-gel method. Investigations of Curie temperature and magnetic entropy change were carried out in the temperature range 240-340 K and magnetic field range 0-1 T. It was found that the Curie temperature T-C decreases with increasing x, and that the maximum magnetic entropy change Delta S-M, for x = 0.20, is 0.3692 J/mol K near the temperature 295 K. The results suggested that these perovskite manganites have some appropriate properties for a good candidate as magnetic refrigeration in the room temperature range. (c) 2006 Elsevier Ltd. All rights reserved.

机译：通过溶胶-凝胶法制备La0.8-xNdxNa0.2MnO3（x = 0.00、0.05、0.10、0.15和0.20）的单相多晶样品。在240-340 K的温度范围和0-1 T的磁场范围内进行了居里温度和磁熵变的研究。发现居里温度TC随着x的增加而降低，并且最大磁熵变ΔSM当x = 0.20时，在温度295 K附近为0.3692 J / molK。结果表明，这些钙钛矿型锰矿具有一些合适的性能，可以很好地用作室温制冷剂。（c）2006 Elsevier Ltd.保留所有权利。

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来源
《Solid State Communications》 |2006年第10期|p. 459-463|共5页
作者
Hou DL; Yue CX; Bai Y; Liu QH; Zha XY; Tang GD;
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作者单位

Hebei Normal Univ, Coll Phys, Shijiazhuang 050016, Peoples R China;

CAS, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China;

Xingtai Coll, Dept Phys, Xingtai 054001, Peoples R China;

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正文语种 eng
中图分类固体物理学;
关键词
magnetically ordered materials; chemical synthesis; magnetocaloric effect; magnetic measurements; MAGNETIC-ENTROPY CHANGE; PEROVSKITE; LA0.7CA0.3MNO3; VACANCIES;

机译：磁性有序材料;化学合成;磁热效应;磁测量;磁熵变;钙钛矿;LA0.7CA0.3MNO3;空泡;

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Magnetocaloric effect in La0.8-xNdxNa0.2MnO3

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