Extrinsic behavior in La0.67Ca0.33MnO3-BaTiO3 composites

被引：6

作者：

Joshi, Leena ^{[1
]}

Keshri, Sunita ^{[1
]}

机构：

[1] Birla Inst Technol, Dept Appl Phys, Ranchi 835215, Bihar, India

来源：

CERAMICS INTERNATIONAL | 2012年 / 38卷 / 07期

关键词：

CMR-based composites; Grain boundaries; Extrinsic and intrinsic MR; M-I transition; MAGNETORESISTANCE; MAGNETIZATION;

D O I：

10.1016/j.ceramint.2012.04.040

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A manganite matrix based nano-composite series, (1 - x)La0.67Ca0.33MnO3(LCMO)-(x)BaTiO3(BTO), has been prepared by the pyrophoric method. Influence of BTO phase on structural and magneto-transport properties of LCP phase has been studied using structural and transport investigations. The series exhibits a conduction threshold at x(m) similar to 0.30. Overall pattern of temperature dependence of resistivity for this series has been fitted with a percolation model. Almost 200% improvement has been observed by the formation of composite when compared to the parent sample. (c) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：5889 / 5896

页数：8

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