期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 682, 期 -, 页码 850-855出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.05.038
关键词
ZnO; Nanoparticles; SEM-EDAX; TEM; UV-Vis; Photoluminescence; EPR; RT ferromagnetism
In this paper, the effect of nickel doping on structural, optical and magnetic properties of ZnO: Ni particles synthesized by solvothermal route using microwave oven is investigated. XRD, SEM with EDAX, TEM and FTIR spectroscopy studies confirm the existence of single phase hexagonal wurtzite structure. UV-Vis spectroscopy shows a shift in band edge towards lower energy. PL spectroscopy measurements illustrate UV emission centered at 390 nm and red emission at 626 nm due to the near-band-edge (NBE) emission and defect related emission of ZnO respectively. VSM studies reveal that the super exchange interaction between the neighboring Ni2+ with Ni2+ ions is responsible for room temperature ferromagnetic behavior in our samples. (C) 2016 Elsevier B.V. All rights reserved.
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