UP TO 50,000 PERCENT RESISTANCE VARIATION IN MAGNETORESISTIVE POLYCRYSTALLINE PEROVSKITES LN(2/3)SR(1/3)MNO(3) (LN=ND, SM)

被引：126

作者：

CAIGNAERT, V ^{[1
]}

MAIGNAN, A ^{[1
]}

RAVEAU, B ^{[1
]}

机构：

[1] UNIV CAEN,F-14050 CAEN,FRANCE

来源：

SOLID STATE COMMUNICATIONS | 1995年 / 95卷 / 06期

关键词：

D O I：

10.1016/0038-1098(95)00291-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A polycrystalline manganite, Sm2/3Sr1/3MnO3 with exceptional magnetoresistive properties has been synthesized. This perovskite-like compound exhibits a resistance variation up to 50 000% at 92.5 K with H=5 T, i.e. of the same order of magnitude as the best films that have been fabricated to date. This large MR ratio compared to other polycrystalline manganites definitely demonstrates that such ceramics can be used for device applications instead of thin films, using liquid nitrogen as a refrigerator. The exploration of other lanthanide manganites Ln(2/3)Sr(1/3)MnO(3) brings the proof that T-c decreases dramatically with the lanthanidic contraction. The size of the interpolated cation and the Mn(III)/Mn(N) mixed valence should be used in the future as a guide for the exploration and optimization of new magnetoresistive oxides.

引用

页码：357 / 359

页数：3

共 10 条

[1] MAGNETORESISTANCE IN MAGNETIC MANGANESE OXIDE WITH INTRINSIC ANTIFERROMAGNETIC SPIN STRUCTURE [J].