MAGNETORESISTANCE IN NANOSTRUCTURED CO-AG PREPARED BY MECHANICAL-ALLOYING

被引：19

作者：

COEY, JMD

FAGAN, AJ

SKOMSKI, R

GREGG, J

OUNADJELA, K

THOMPSON, SM

机构：

[1] UNIV OXFORD,DEPT PHYS,CLARENDON LAB,OXFORD OX1 3PU,ENGLAND

[2] INST LEBEL,CNRS STRASBOURG,F-67070 STRASBOURG,FRANCE

[3] UNIV YORK,DEPT PHYS,YORK YO1 5DD,N YORKSHIRE,ENGLAND

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1994年 / 30卷 / 02期

关键词：

D O I：

10.1109/20.312370

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Fine cobalt and silver powders have been ball-milled to yield a granular solid of composition Co30Ag70 in the form of coarse powder. The material is an intimate mixture of grains of fcc Co in a silver matrix. The cobalt is in the single-domain size range, and the samples exhibit coercivity (0.07 T at 296 K) and unusual thermomagnetic effects, including field-induced unidirectional anisotropy. There is a large, isotropic negative magnetoresistance, which exceeds 10 % at 4.2 K.

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页码：666 / 668

页数：3

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