Control of the electric and magnetic properties of ZnO films

被引:17
作者
Tabata, H [1 ]
Saeki, M [1 ]
Guo, SL [1 ]
Choi, JH [1 ]
Kawai, T [1 ]
机构
[1] Osaka Univ, ISIR Sanken, Ibaraki, Osaka 5670047, Japan
关键词
ZnO; laser MBE; thin films transistor;
D O I
10.1016/S0921-4526(01)00861-4
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We have demonstrated a possibility of the growth of p-type ZnO films by a pulsed laser deposition technique combined with a plasma gas source. The p-type ZnO film has been fabricated by passing N2O gas through an ECR or RF plasma source. N2O gas is effective in preventing ''O'' vacancies from occurring and introducing "N" as an acceptor, at the same time. Two-step growth, with a thin ZnO template layer formed at high temperature, is quite effective to realize a well-crystallized growth at low temperature. This non-equilibrium film formation process enables us to produce other new ZnO films which show ferromagnetic properties which means that a transparent magnet is realized with this technique. These various types of ZnO films will open the door for practical applications in various oxide electronic devices. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:993 / 998
页数:6
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