Magnetic entropy change in perovskite manganites La0.7A0.3MnO3 La0.7A0.3Mn0.9Cr0.1O3 (A = Sr, Ba, Pb) and Banerjee criteria on phase transition

被引：30

作者：

Wang, Zhiming ^{[1
,2
]}

Jiang, Junjie ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Inst Engn Mech, Nanjing 210094, Jiangsu, Peoples R China

[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

来源：

SOLID STATE SCIENCES | 2013年 / 18卷

关键词：

Magnetic entropy change; Perovskite manganite; Banerjee criteria; COLOSSAL-MAGNETORESISTANCE; MAGNETOCALORIC PROPERTIES; TRANSPORT-PROPERTIES; 1ST-ORDER; X=0.1; SIZE;

D O I：

10.1016/j.solidstatesciences.2012.12.020

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The La(0.7)A(0.3)MnO(3). La(0.7)A(0.3)Mn(0.9)Cr0.1 (A = Sr, Ba, Pb) polycrystalline perovskite manganites sample was prepared by the sol gel technique. The replacement of partial Mn3+/Mn4+ by Cr3+ (Cr3+ with the same electronic configuration as Mn4+) cause the variety of magnetocaloric property and magnetic entropy change. The maximum magnetic entropy change ASH = 1.16 J/kg I( and the Relative Cooling Power (about 43.3 J/kg) were obtained from La0.7Sr0.3Mn0.9Cr0.1O3 in the Cr3+ doped series under 1 T magnetic field variation. On this paper, Banerjee criteria had been remarked to distinguish the first-order or second-order phase transition on phase transition of the doped perovskite manganites. (C) 2013 Elsevier Masson SAS. All rights reserved.

引用

页码：36 / 41

页数：6

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