Preparation and magneto-caloric effect of La1-xAgxMnO3 (x=0.10-0.30) perovskite compounds

被引：77

作者：

Hien, NT

Thuy, NP

机构：

[1] Vietnam Natl Univ, Fac Phys, Coll Nat Sci, Cryogen Lab, Hanoi, Vietnam

[2] ITIMS, Hanoi, Vietnam

来源：

PHYSICA B-CONDENSED MATTER | 2002年 / 319卷 / 1-4期

关键词：

magneto-caloric effect; La1-xAgxMnO3; perovskite compounds;

D O I：

10.1016/S0921-4526(02)01118-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Polycrystalline La1-xAgxMnO3 perovskite compounds (with x = 0.10-0.30) have been synthesised by both the conventional solid-state reaction and the sol-gel method. While all samples with Ag concentrations up to 0.20 consist of single-phase perovskites with rhombohedral structure, unreacted Ag was found in the samples with Ag concentrations of 0.22 and higher. Magnetic properties of the as-prepared materials have been investigated. The magneto-caloric effect in these compounds has been found to be considerably large and higher than that in other perovskite compounds in which La is substituted by divalent alkali-earth elements. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：168 / 173

页数：6

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