Electronic structure, magnetic and structural properties of Ni doped ZnO nanoparticles

Authors
Kumar, ShalendraVats, PrashantGautam, S.Gupta, V. P.Verma, K. D.Chae, K. H.Hashim, Mohd.Choi, H. K.
Issue Date
2014-11
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
MATERIALS RESEARCH BULLETIN, v.59, pp.377 - 381
Abstract
We report structural, magnetic and electronic structural properties of Ni doped ZnO nanoparticles prepared by auto-combustion method. The prepared nanoparticles were characterized by using X-ray diffraction (XRD), high resolution transmission electron microscopy (HR-TEM), near edge X-ray absorption fine structure (NEXAFS) spectroscopy, and dc magnetization measurements. The XRD and HR-TEM results indicate that Ni doped ZnO nanoparticles have single phase nature with wurtzite lattice and exclude the presence of secondary phase. NEXAFS measurements performed at Ni L-3,L-2-edges indicates that Ni ions are in +2 valence state and exclude the presence of Ni metal clusters. O K-edge NEXAFS spectra indicate an increase in oxygen vacancies with Ni-doping, while Zn L-3,L-2-edge show the absence of Zn-vacancies. The magnetization measurements performed at room temperature shows that pure and Ni doped ZnO exhibits ferromagnetic behavior. (C) 2014 Elsevier Ltd. All rights reserved.
Keywords
ROOM-TEMPERATURE FERROMAGNETISM; ROOM-TEMPERATURE FERROMAGNETISM; Nanostructures; Chemical synthesis; Transmission electron microscopy; Electronic structure; X-ray diffraction
ISSN
0025-5408
URI
https://pubs.kist.re.kr/handle/201004/126195
DOI
10.1016/j.materresbull.2014.07.044
Appears in Collections:
KIST Article > 2014
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