Room temperature ferromagnetism in chemically synthesized ZnO rods

被引：62
|
作者：
Kumar, Shalendra [1 ]
Kim, Y. J. [1 ]
Koo, B. H. [1 ]
Gautam, S. [2 ]
Chae, K. H. [2 ]
Kumar, Ravi [3 ]
Lee, C. G. [1 ]
机构：
[1] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Chang Won 641773, South Korea
[2] KIST, Mat Sci & Technol Res Div, Seoul 136791, South Korea
[3] Inter Univ Accelerator Ctr, New Delhi 110067, India
来源：
MATERIALS LETTERS | 2009年 / 63卷 / 02期
关键词：
DMS; ZnO; X-ray diffraction and absorption;
D O I：
10.1016/j.matlet.2008.09.057
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report structural and magnetic properties of pure ZnO rods using x-ray diffraction (XRD), magnetization hysteresis (M-H) loop and near edge x-ray fine structure spectroscopy (NEXAFS) study at O K edge. Sample of ZnO was prepared by co-precipitation method. XRD and selective area electron diffraction measurements infer that ZnO rods exhibit a single phase polycrystalline nature with wurtzite lattice. Field emission transmission electron microscopy, field emission scanning electron microscopy micrographs infers that ZnO have rod type microstructures with dimension 200 nm in diameter and 550 nm in length. M-H loop studies performed at room temperature display room temperature ferromagnetism in ZnO rods. NEXAFS study reflects absence of the oxygen vacancies in pure ZnO rods. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：194 / 196
页数：3
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