Effects of Cr-doping on the optical and magnetic properties in ZnO nanoparticles prepared by sol-gel method

被引：126
|
作者：
Liu, Yang [1 ,2 ]
Yang, Jinghai [2 ]
Guan, Qingfeng [1 ]
Yang, Lili [2 ]
Zhang, Yongjun [2 ]
Wang, Yaxin [2 ]
Feng, Bo [2 ]
Cao, Jian [3 ]
Liu, Xiaoyan [2 ]
Yang, Yanting [2 ]
Wei, Maobin [2 ]
机构：
[1] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China
[2] Jilin Normal Univ, Inst Condensed State Phys, Siping 136000, Peoples R China
[3] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Key Lab Excited State Phys, Changchun 130033, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 486卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
ZnO nanoparticles; Cr-doping; Diluted magnetic semiconductors; Ferromagnetism; ROOM-TEMPERATURE FERROMAGNETISM; DOPED ZNO; THIN-FILMS; PHOTOLUMINESCENCE; SEMICONDUCTOR;
D O I：
10.1016/j.jallcom.2009.07.076
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 undoped ZnO nanoparticles and the Cr-doped ZnO nanoparticles were successfully synthesized by the sol-gel method. The structure, the optical characteristics and the magnetic properties of the produced samples were studied. The results indicated that Cr ions substituted for Zn ions successfully and the Cr-doping restrained the growth of the crystal lattice. The Cr ions exhibited +3 valence state other than +2 valence state. The dopant concentration was about 3 atm% in the Cr-doped ZnO nanoparticles, which was consistent with the design of our experiment. Compared with the photoluminescence (PL) spectrum of the ZnO nanoparticles, the peak position of ultraviolet (UV) emission of the Cr-doped ZnO nanoparticles exhibited blue shift, and the deep level emission band was sharply suppressed. Moreover, the Cr-doped ZnO nanoparticles had good ferromagnetic property at room temperature. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：835 / 838
页数：4
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