Great influence of the oxygen vacancies on the ferromagnetism in the Co-doped ZnO films

被引：47
|
作者：
Huang, Bao
Zhu, Deliang
Ma, Xiaocui [1 ]
机构：
[1] Shenzhen Univ, Dept Mat Sci & Engn, Shenzhen 518060, Peoples R China
[2] Shenzhen Univ, Shenzhen Key Lab Special Funct Mat, Shenzhen 518060, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2007年 / 253卷 / 16期
基金：
中国国家自然科学基金;
关键词：
ZnO; XPS; oxygen vacancy; ferromagnetism;
D O I：
10.1016/j.apsusc.2007.02.014
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：
The ZCO (Co-doped ZnO) films were prepared by using submolecule-doping technique, where the magnetic sputtering of Co and ZnO were alternatively performed onto silicon substrates. The prepared ZCO films were then annealed at different temperatures, and the dependence of the ferromagnetism on annealing temperature was studied. It is found that the saturation magnetization of our samples decreases with the increase of annealing temperature. This behavior is possibly due to the decrease of oxygen vacancies with the increase of the annealing temperature. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：6892 / 6895
页数：4
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