Ferromagnetism in ZnO codoped with transition metals:: Zn1-x(FeCo)xO and Zn1-x(FeCu)xO -: art. no. 224436

被引：191

作者：

Park, MS ^{[1
]}

Min, BI

机构：

[1] Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea

[2] Pohang Univ Sci & Technol, Electron Spin Sci Ctr, Pohang 790784, South Korea

来源：

PHYSICAL REVIEW B | 2003年 / 68卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.68.224436

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated electronic structures and magnetic properties of ZnO-based potential diluted magnetic semiconductors codoped with transition metals: Zn1-x(FeCo)(x)O and Zn1-x(FeCu)(x)O. We have found that the origin of the observed ferromagnetism in Zn1-x(FeCo)(x)O would be different from that in Zn1-x(FeCu)(x)O. Zn1-x(FeCo)(x)O does not have a tendency to form the Fe-O-Co ferromagnetic cluster, and so the double-exchange mechanism will not be effective. In contrast, Zn1-x(FeCu)(x)O has a tendency to form the Fe-O-Cu ferromagnetic cluster with the charge transfer between Fe and Cu, which would lead to the ferromagnetism via a type of the double-exchange mechanism. The ferromagnetic and nearly half-metallic ground state is obtained for Zn1-x(FeCu)(x)O.

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页数：6

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