Magnetocaloric effect in the Fe-doped La0.67Ba0.33Mn1-x Fe x O3 system

被引：4

作者：

Kawanaka, Hirofumi ^{[1
]}

Bando, Hiroshi ^{[1
]}

Nishihara, Yoshikazu ^{[2
]}

机构：

[1] Adv Ind Sci & Technol, Elect & Photon Res Inst, Tsukuba, Ibaraki 3058568, Japan

[2] Ibaraki Univ, Coll Sci, Mito, Ibaraki 3010056, Japan

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2013年 / 63卷 / 03期

关键词：

Magnetocaloric effect; Perovskite-type oxides; Ferromagnetic; Curie temperature; Magnetic entropy change; La0.67Ba0.33Mn1-xFexO3;

D O I：

10.3938/jkps.63.529

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The magnetocaloric effect and the magnetization behavior have been studied in the perovskite-type oxides of La0.67Ba0.33Mn1-x Fe (x) O-3 (x = 0, 0.03, 0.04 and 0.05). Samples were synthesized by using the conventional solid-state reaction method. The Curie temperature (T (C) ) and the magnetic entropy change were determined and compared to those of other perovskite-type ferromagnetic manganese-oxide systems. The Curie temperature decreased from 350 K to 290 K with increasing Fe concentration x. A relatively large magnetocaloric effect compared with other oxides, with a broad peak around the Curie temperature, is observed in the La0.67Ba0.33Mn1-x Fe (x) O-3 system. In addition, the Curie temperature varies easily with the Fe around room temperature. These Fedoped manganese oxides are possible candidate materials for use in magnetic refrigeration at room temperature.

引用

页码：529 / 531

页数：3

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