ESR study of magnetic structures in La0.7Ca0.3MnO3

被引：6

作者：

Joh, KW

Lee, CE ^{[1
]}

Lee, CH

Jeong, YH

机构：

[1] Korea Univ, Dept Phys, Seoul 136701, South Korea

[2] Korea Univ, Grad Sch Biotechnol, Seoul 136701, South Korea

[3] Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea

来源：

CURRENT APPLIED PHYSICS | 2002年 / 2卷 / 05期

关键词：

colossal magnetoresistance; La0.7Ca0.3; ESR; phase separation;

D O I：

10.1016/S1567-1739(02)00151-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Comprehensive measurements of electron spin resonance (ESR) and magnetization of La0.7Ca0.3MnO3 in the ferromagnetic as well as paramagnetic phases were carried out. Quantitative evidences for the inhomogeneous magnetic structure, consisting of ferromagnetic microregions embedded in the antiferromagnetic surrounding near T-c, were found. It is suggested that the microscopic local magnetic structures above and below T-c are qualitatively similar except that the phase below T-c carries long range order between the ferromagnetic microregions whose sizes grow with decreasing temperature. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：411 / 415

页数：5

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