Magnetocaloric effect in La0.8-xNdxNa0.2MnO3

被引：17

作者：

Hou, Deng-Lu

Yue, Cai-Xia

Bai, Yun

Liu, Qing-Hua

Zha, Xiu-Ying

Tang, Gui-De

机构：

[1] Hebei Normal Univ, Coll Phys, Shijiazhuang 050016, Peoples R China

[2] CAS, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[3] Xingtai Coll, Dept Phys, Xingtai 054001, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2006年 / 140卷 / 9-10期

关键词：

magnetically ordered materials; chemical synthesis; magnetocaloric effect; magnetic measurements;

D O I：

10.1016/j.ssc.2006.09.002

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

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.

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页码：459 / 463

页数：5

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