Large room temperature magnetoresistance in YSZ doped La0.67Ba0.33MnO3 composite

被引：47

作者：

Xia, ZC ^{[1
]}

Yuan, SL ^{[1
]}

Feng, W ^{[1
]}

Zhang, LJ ^{[1
]}

Zhang, GH ^{[1
]}

Tang, J ^{[1
]}

Liu, L ^{[1
]}

Liu, S ^{[1
]}

Peng, G ^{[1
]}

Niu, DW ^{[1
]}

Chen, L ^{[1
]}

Zheng, QH ^{[1
]}

Fang, ZH ^{[1
]}

Tang, CQ ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan 430074, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2003年 / 128卷 / 08期

关键词：

manganites; grain boundaiy; electrical transport;

D O I：

10.1016/j.ssc.2003.08.024

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The temperature dependence of the resistivity for composite samples of (1 - x)La0.67Ba0.33MnO3 + x YSZ(LBMO/YSZ) with different YSZ doping level of x has been investigated in a magnetic field range of 0-7000 Oe, where the YSZ represents yttria-stabilized zirconia (8 mol% Y2O3 + 92 mol% ZrO2). With increasing YSZ doping level, the range of 0-10%, the metal insulator transition temperature (T-P) decreases. However, the resistivity, specially the low temperature resistivity, increases. Results also show that the YSZ doping level has an important effect on a low field magnetoresistance (LFMR). In the magnetic field of 7000 Oe, a room temperature magnetoresistance value of 20% was observed for the composite with a YSZ doping level of 2%, which is encouraging for potential application of CMR materials at room temperature and low field. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：291 / 294

页数：4

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