Observation of ferromagnetism at room temperature in ZnO thin films

被引：349

作者：

Hong, Nguyen Hoa

Sakai, Joe

Brize, Virginie

机构：

[1] Univ Tours, CNRS, CEA, UMR 6157,Lab LEMA, F-37200 Tours, France

[2] JAIST, Sch Mat Sci, Nomi, Ishikawa 9231292, Japan

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2007年 / 19卷 / 03期

关键词：

D O I：

10.1088/0953-8984/19/3/036219

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Room-temperature ferromagnetism (FM) has been observed in laser-ablated ZnO thin films. The FM in this type of compound does not stem from oxygen vacancies as in the case of TiO2 and HfO2 films, but from defects on Zn sites. Magnetization of very thin films is much larger than that of the thicker films, showing that defects must be located mostly at the surface and/or the interface between the film and the substrate. Results on Fe-doped ZnO and Mn-doped ZnO films reveal clearly that the metal-transition doping does not play any essential role in introducing the magnetism in ZnO.

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页数：6

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