Evidence for magnetism due to oxygen vacancies in Fe-doped HfO2 thin films

被引：73

作者：

Hong, Nguyen Hoa

Poirot, Nathalie

Sakai, Joe

机构：

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

[2] IUT Blois, F-41029 Blois, France

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

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

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 04期

关键词：

D O I：

10.1063/1.2236105

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Fe-doped HfO2 thin films are room temperature ferromagnetic. In comparison with results of the undoped HfO2 films, it seems that the Fe doping is not the main cause for the ferromagnetism but only acts as a catalyst. Experimental results of oxygen annealing and vacuum heat treatments have proven that in this family of compounds, magnetism might originate from oxygen vacancies or defects. Removing oxygen enhances the magnetic moment, while reversibly filling up oxygen vacancies can destroy the ferromagnetic ordering of the system.

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页数：3

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