Relevant GMR in As-Deposited Co-Ag Electrodeposits: Pulse Plating Deposition

被引：7
|
作者：
Garcia-Torres, Jose [1 ]
Valles, Elisa
Gomez, Elvira
机构：
[1] Univ Barcelona, Dept Quim Fis, ELECTRODEP, E-08028 Barcelona, Spain
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 19期
关键词：
GIANT MAGNETORESISTANCE; GRANULAR FILMS; SUPERPARAMAGNETIC PARTICLES; MAGNETIC-PROPERTIES;
D O I：
10.1021/jp1019558
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Electrodeposited cobalt-silver heterogeneous films with giant magnetoresistance prepared by means of pulse technique have been investigated. The size distribution indicates that films are composed of superparamagnetic particles; however, ferromagnetic cobalt granules are also present. Magnetic and magnetotransport measurements support the presence of both kinds of particles. Structural analysis of the Co-Ag granular films revealed the presence of fcc-Ag and a mixture of hcp-Co and fcc-Co. No signs of solid solution were detected. GMR values up to 7% were measured at room temperature for the as-deposited films. High superparamagnetic contribution was observed in all conditions analyzed after the decomposition of the total magnetoresistance into its superparamagnetic and ferromagnetic contribution.
引用
收藏
页码：9146 / 9152
页数：7
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