Magneto-transport studies on (Pr1/3Sm2/3)2/3A1/3MnO3 (A = Ca, Sr and Ba) compounds

被引：23

作者：

Asthana, S ^{[1
]}

Bahadur, D

Nigam, AK

Malik, SK

机构：

[1] Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India

[2] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2004年 / 16卷 / 29期

关键词：

D O I：

10.1088/0953-8984/16/29/020

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The magnetic and transport properties of (Pr1/3Sm2/3)(2/3)A(1/3)MnO(3) (A = Ca, Sr and Ba) compounds, prepared by the citrate-gel route, have been investigated. These compounds are found to crystallize in the orthorhombic structure. Charge ordering transport behaviour is indicated only in the Ca-substituted compound. The Sr- and Ba-substituted compounds show a metal-insulator transition and semiconducting-like behaviour, respectively. The magnetoresistance is highest in the Ba-substituted compound. All three samples show irreversibility in magnetization as a function of temperature in zero-field cooled (ZFC) and field cooled (FC) plots. Non-saturating magnetization, even at 5 K and 4 T field, is observed in Ca- as well Ba-substituted compounds.

引用

页码：5297 / 5307

页数：11

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