Journal
JOURNAL OF LUMINESCENCE
Volume 178, Issue -, Pages 375-383Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2016.06.004
Keywords
Nanostructures; Optical properties; Magnetic properties
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Funding
- UGC, India [F. 41-933/2012 (SR)]
- DST-PURSE [SR/S9Z-415 23/2010/42(G)]
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Gadolinium (Gd) doped zinc oxide (ZnO) nanoparticles (NPs) with hexagonal wurtzite structure was synthesized via a co-precipitation method. The structural properties of synthesized pure and Gd doped ZnO NPs were investigated by X-ray diffraction analysis and it showed smaller crystallite size for pure than Gd doped ZnO. HRSEM analysis revealed spindle like morphologies for the synthesized NPs. Optical properties of the nanoparticles were investigated by photoluminescence study and it revealed band edge emission for all synthesized materials with additional emissions in visible region due to the presence of vacancy and interstitial defects. FTIR provides the functional characteristics of pure and Gd doped ZnO nanoparticles. XPS measurement revealed the composition of nanostructures. Room temperature magnetic measurement was investigated using a vibrating sample magnetometer and showed weak ferro-magnetism in Gd doped ZnO NPs, which is switched into super paramagnetism due to the further increase of Gd concentration in ZnO matrix. (C) 2016 Elsevier B.V. All rights reserved.
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