PR-DOPING OF THE HIGH-MAGNETORESISTANCE PEROVSKITE ND2/3SR1/3MNO3

被引：32

作者：

JIA, YX ^{[1
]}

LU, L ^{[1
]}

KHAZENI, K ^{[1
]}

YEN, D ^{[1
]}

LEE, CS ^{[1
]}

ZETTL, A ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DIV MAT SCI, BERKELEY, CA 94720 USA

来源：

SOLID STATE COMMUNICATIONS | 1995年 / 94卷 / 11期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0038-1098(95)00185-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have investigated the effect of Pr-doping on the Nd-sites in the high magnetoresistance (MR) perovskite Nd2/3Sr1/3MnO3. For polycrystalline materials, negative MR as high as similar to 235% is observed near 237K in pure Nd2/3Sr1/3MnO3. The substitution of Pr for Nd leads to a reduction in the overall MR, and an increase of the MR-peak temperature. We investigate the possibility that the large negative MR originates from the formation of localized magnetic polarons.

引用

页码：917 / 920

页数：4

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