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

Nanocrystalline Zn 1- x Gd x O ( 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,...

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Bibliographic Details
Published in:Journal of advanced ceramics 2015-12, Vol.4 (4), p.300-306
Main Authors: Sambasivam, S., Joseph, D. Paul, Asiri Naidu, S., Hui, K. N., Hui, K. S., Choi, B. C.
Format: Article
Language:English
Subjects:
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Glass
Materials Science
Nanotechnology
Natural Materials
Research Article
Structural Materials
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Summary:Nanocrystalline Zn 1- x Gd x O ( 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 Gd 3+ concentration. The photoluminescence of nanocrystalline Gd 3+ doped ZnO exhibited a strong violet–blue emission. Concentration dependence of the emission intensity of Gd 3+ in ZnO was studied, and the critical concentration was found to be 4 mol% of Gd 3+ . The Gd 3+ doped ZnO exhibited paramagnetic behavior at room temperature, and the magnetic moment increased with Gd 3+ concentration.
ISSN:2226-4108
2227-8508
DOI:10.1007/s40145-015-0164-y