Influence of thermal treatment on tuning the ferromagnetism in Mn-doped ZnO film

被引：11

作者：

Gao, Q. Q. ^{[1
]}

Yu, Q. X. ^{[1
]}

Chen, B. ^{[1
]}

Zhu, H. ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 590卷

关键词：

Thermal treatment; Mn-doped ZnO film; Room temperature ferromagnetism; Precipitates ZnMn2O4; ROOM-TEMPERATURE FERROMAGNETISM; THIN-FILMS; STRUCTURAL-ANALYSIS; PHOTOLUMINESCENCE; REACTIVITY; LAYER;

D O I：

10.1016/j.jallcom.2013.12.127

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of thermal treatment on the structural, optical, and magnetic properties of Mn- doped ZnO film prepared by radio frequency magnetron sputtering has been investigated. Higher pre- annealing temperature (> 700 degrees C) in O-2 or N-2 caused the formation of a ZnMn2O4 room-temperature paramagnetic precipitate which decreased the amount of substituted Mn2+ ions in ZnO matrix. Meanwhile, the amount of oxygen vacancies, especially the singly ionized oxygen vacancies, increased after N-2/H-2 annealing obtained by the analysis of photoluminescence spectrum. So based on the bound magnetic polaron model, we emphasized that the effective doping density of Mn2+ ions together with the singly ionized oxygen vacancies play an important role in tuning the magnetic coupling of Mn- doped ZnO film. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：446 / 452

页数：7

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