Magnetic and magnetoresistive properties of La0.65-xEuxSr0.35MnO3

被引：8

作者：

Feng, Ming ^{[1
]}

Li, Hai-bo ^{[1
]}

Liu, Mei ^{[1
]}

Li, Na ^{[1
]}

Zheng, Wei-tao ^{[2
]}

机构：

[1] Jilin Normal Univ, Inst Condensed Matter Phys & Mat Sci, Siping 136000, Peoples R China

[2] Jilin Univ, Dept Mat Sci, Changchun 130012, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2009年 / 35卷 / 01期

关键词：

Sol-gel processes; X-ray methods; Electrical properties; Magnetic properties; Perovskites; COLOSSAL MAGNETORESISTANCE; MAGNETOTRANSPORT; LA1-XSRXMNO3; MANGANITES; PEROVSKITE;

D O I：

10.1016/j.ceramint.2007.11.004

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：

Eu-doped perovskites La0.65-xEuxSr0.35MnO3 (0.05 <= x <= 0.30) were synthesized by sol-gel method using citric acid and characterized by X-ray diffraction, magnetization, resistivity and magnetoresistance (MR) experiments. All samples had a single hexagonal perovskite structure. As x increased from 0.05 to 0.30, the Curie temperature TC for the samples decreased from 352 to 242 K. It was found that two transition points appeared when the resistivity changed with increasing temperature, and upon an application of a magnetic field of 20 kOe the maximum magnetoresistivity of 18% for the La0.65-xEuxSr0.35MnO3 with x = 0.20 was obtained at room temperature 300 K. The mechanism of the transitions for the samples was explored. (C) 2007 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：345 / 347

页数：3

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