Large magnetic entropy change in (Pr1-xNdx)0.5Sr0.5MnO3

被引：5
作者：
Chen, P [1 ]
Du, YW
机构：
[1] SW Normal Univ, Dept Phys, Chongqing 400715, Peoples R China
[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2001年 / 34卷 / 12期
关键词：
D O I：
10.1088/0022-3727/34/12/316
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A large magnetic entropy change (6.5-8 J kg(-1) K-1) has been discovered in (Pr1-xNdx)(0.5)Sr0.5MnO3 (x = 0, 0.3, 0.5, 0.7, 1) under a low magnetic field of 10 kOe at the charge-ordered state transition temperature. It exceeds the magnetic entropy change (3.1 J kg(-1) K-1) in Gd at 293 K by a factor of two under the same conditions. The physical mechanism is related to the drastic change of magnetization with temperature at the field-induced magnetic, electron and structural phase transition temperature (from antiferromagnetic charge-ordered state to ferromagnetic charge-disordered state).
引用
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页码：1868 / 1871
页数：4
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