Organic co-decomposition method for the synthesis of Mn and Co doped ZnO submicrometer crystals: Photoluminescence and magnetic properties

被引：5
作者：
Wang, H. B. [1 ,2 ]
Wang, H. [1 ,2 ]
Wang, X. N. [1 ,2 ]
Zhang, J. [1 ,2 ]
Wu, S. [1 ,2 ]
Duan, J. X. [1 ,2 ]
Jiang, Y. [3 ]
机构：
[1] Hubei Univ, Fac Phys, Wuhan 430062, Peoples R China
[2] Hubei Univ, Elect Technol & Nanotechnol Res Ctr, Wuhan 430062, Peoples R China
[3] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2011年 / 208卷 / 10期
关键词：
DMS; doping; magnetic properties; photoluminescence; HIGH-TEMPERATURE FERROMAGNETISM; OPTICAL-PROPERTIES; SEMICONDUCTOR; COBALT; SPINTRONICS; ORIGIN;
D O I：
10.1002/pssa.201026737
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on the optical and magnetic characteristics of the Co and Mn doped ZnO submicrometer crystals (SMCs) synthesised by organic thermal decomposition method. The doped ZnO SMCs are hexagon cone in shape with size ranging from 100 to 400 nm. X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy measurements indicate that the Mn2+ and Co2+ are doped into the ZnO lattice with concentration of 5.4 and 4.85%, respectively. Optical absorption spectra of the doped SMCs display additional peaks associated with d-d crystal-field transitions due to the presence of tetrahedral Co2+ or Mn2+ ions. Photoluminescence of the samples shows suppressed band-gap emission, indicating that the Mn or Co ions in the ZnO lattice increase the non-irradiative recombination processes. Magnetic property measurements reveal that the Mn: ZnO SMCs are paramagnetic while the Co: ZnO exhibit weak ferromagnetism at 300 K. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：2393 / 2398
页数：6
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