Impact of niobium doping upon the magnetotransport properties of the oxygen-deficient perovskite SrCo1-xNbxO3-δ -: art. no. 192504

被引：11

作者：

Motohashi, T

Caignaert, V

Pralong, V

Hervieu, M

Maignan, A

Raveau, B

机构：

[1] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

[2] ENSICAEN, CNRS, UMR 6508, Lab CRISMAT, F-14050 Caen, France

来源：

APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 19期

关键词：

D O I：

10.1063/1.1925312

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The oxygen-deficient perovskite cobaltite SrCo1-xNbxO3-delta was synthesized by direct solid-state reaction and its magnetotransport properties were investigated. This cobaltite exhibits an unusual ferromagnetic behavior with a transition temperature T-m = 130 to 150 K and a spin-glass-like behavior below Tm. Importantly, this phase reaches a large magnetoresistance (MR) value, MR -(rho(H)-rho(0))/rho(0) = 30% at 5 K in 7 T. The large MR effect is believed to be related to the disordered magnetic state induced by the Nb-for-Co substitution. (c) 2005 American Institute of Physics.

引用

页码：1 / 3

页数：3

共 11 条

[1]

BEZICKA P, 1993, Z ANGORG ALLG CHEM, V619, P7

[2] A CLASS OF COBALT OXIDE MAGNETORESISTANCE MATERIALS DISCOVERED WITH COMBINATORIAL SYNTHESIS [J].