Intense violet–blue emission and paramagnetism of nanocrystalline Gd3+ doped ZnO ceramics

Sambasivam, S., Joseph, D. Paul, Asiri Naidu, S., Hui, K. N., Hui, K. S. and Choi, B. C. (2015) Intense violet–blue emission and paramagnetism of nanocrystalline Gd3+ doped ZnO ceramics. Journal of Advanced Ceramics, 4 (4). pp. 300-306. ISSN 2227-8508

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Abstract

Nanocrystalline Zn1-xGdxO (x = 0, 0.02, 0.04, 0.06, and 0.08) ceramics were synthesized by ball milling and subsequent solid-state reaction. The transmission electron microscopy (TEM) micrograph of as synthesized samples revealed the formation of crystallites with an average diameter of 60 nm, and the selected area electron diffraction (SAED) pattern confirmed the formation of wurtzite structure. A red shift in the band gap was observed with increasing Gd3+ concentration. The photoluminescence of nanocrystalline Gd3+ doped ZnO exhibited a strong violet–blue emission. Concentration dependence of the emission intensity of Gd3+ in ZnO was studied, and the critical concentration was found to be 4 mol% of Gd3+. The Gd3+ doped ZnO exhibited paramagnetic behavior at room temperature, and the magnetic moment increased with Gd3+ concentration.

Item Type: Article
Additional Information: This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.
Uncontrolled Keywords: nano-ceramics,rare earth element,semiconductors,x-ray diffraction (xrd)
Faculty \ School: Faculty of Science > School of Mathematics
Related URLs:
Depositing User: Pure Connector
Date Deposited: 04 Oct 2016 12:01
Last Modified: 24 Nov 2020 00:59
URI: https://ueaeprints.uea.ac.uk/id/eprint/60661
DOI: 10.1007/s40145-015-0164-y

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