Magnetocaloric effect in La1-xAgyMnO3 (y≤x):: direct and indirect measurements

被引：80

作者：

Kamilov, I. K. ^{[1
]}

Gamzatov, A. G.

Aliev, A. M.

Batdalov, A. B.

Aliverdiev, A. A.

Abdulvagidov, Sh B.

Melnikov, O. V.

Gorbenko, O. Yu

Kaul, A. R.

机构：

[1] DSC RAS, Inst Phys, Makhachkala 367003, Russia

[2] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119899, Russia

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2007年 / 40卷 / 15期

关键词：

D O I：

10.1088/0022-3727/40/15/004

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

For the first time the magnetocaloric properties of La0.9Ag0.1MnO3, La0.8Ag0.2MnO3, La0.85Ag0.15MnO3, La0.8Ag0.15MnO3 and La0.8Ag0.1MnO3 manganites have been investigated by direct and indirect measurement techniques. All samples showed almost the same relative cooling power (RCP). Temperatures of maxima of the magnetocaloric effect (MCE) are between a few degrees below freezing and the room temperature region. The compounds showed RCP values of about 100 J kg(-1) at a field change of 2.6 T, which is about half the RCP of gadolinium. Because of considerable MCE and the Curie temperatures ranging from 269 to 303 K, these materials could be used as magnetic refrigerants for magnetic refrigeration in the sub-room and room temperature range.

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页码：4413 / 4417

页数：5

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