Large magnetic entropy change near charge-ordered transition temperature in Nd0.5Sr0.5MnO3

被引：10

作者：

Chen, P

Du, YW

机构：

[1] Nanjing Univ, Dept Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[2] SW Normal Univ, Dept Phys, Chongqing 400715, Peoples R China

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2001年 / 70卷 / 04期

关键词：

magnetic entropy change; charge-ordered state; first-order phase transition; field-induced transition;

D O I：

10.1143/JPSJ.70.1080

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Large magnetic entropy change (7.5 J/kg .K) was discovered in Nd0.5ST0.5MnO3 under a low magnetic field of 10 kOe at charge-ordered state transition temperature (183 K). It exceeds the magnetic entropy change in Gd by a factor of 2.4 at phase transition temperature under same magnetic field. The physical mechanism is related to the field-induced first-order magnetic, electron and structural transition (from antiferromagnetic charge-ordered state to ferromagnetic charge-disordered state).

引用

页码：1080 / 1083

页数：4

共 24 条

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