Structural and magnetic properties of ZnO:TM (TM: Co, Mn) nanopowders

被引：16
作者：
Rubi, D.
Calleja, A.
Arbiol, J.
Capdevila, X. G.
Segarra, M.
Aragones, Ll.
Fontcuberta, J.
机构：
[1] CSIC, Inst Ciencia Mat Barcelona, E-08193 Belaterra, Spain
[2] Qual Chem, Esparreguera 08292, Spain
[3] Univ Barcelona, Serv Cientificotecn, MAT, TEM, E-08028 Barcelona, Spain
[4] Univ Barcelona, Fac Quim, E-08028 Barcelona, Spain
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 316卷 / 02期
关键词：
diluted magnetic semiconductors; ferromagnetism; aging; defects;
D O I：
10.1016/j.jmmm.2007.02.092
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on the structural and magnetic characterization of Co0.1Zn0.9O and Mn0.1Zn0.9O nanopowders obtained by a soft chemistry route. We show that those samples fired at low temperatures display a ferromagnetic interaction that cannot be attributed to the presence of impurities. A magnetic aging mechanism is observed, reflecting the key role played by defects in the stabilization of ferromagnetism in this kind of diluted magnetic semiconductors. (c) 2007 Elsevier B.V. All rights reserved.
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收藏
页码：E211 / E214
页数：4
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