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Journal of Materials Science: Materials in Electronics
Published in: Journal of Materials Science: Materials in Electronics 14/2019

18-06-2019

Investigation of the structural, morphological and luminescence properties of MgAl2O4:Cr3+ nano powders

Authors: Yan Hao, Kaipeng Wu

Published in: Journal of Materials Science: Materials in Electronics | Issue 14/2019

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Abstract

Cr3+ doped MgAl2O4 nano powders were prepared by the Pechini-type sol–gel process. Comprehensive analysis for the MgAl2-xO4:xCr3+(0 ≤ x ≤ 0.05) nano crystalline was performed using X-ray Diffraction, Fourier Transform Infrared Spectroscopy, Field Emission Scanning Electron Microscope, Diffuse Reflectance Spectra, Excitation and Emission Spectra. The powders calcined at 1100 °C were spherical with the average particle size of 90 nm, which were suitable for the preparation of the transparent ceramics. The crystal field, electron-vibration coupling and energy levels splitting of MgAl2O4: Cr3+ were discussed. The Cr3+ was suited in a strong crystal field, and the value of Dq/B = 3.9. At 457 nm excitations, the characteristic zero phonon lines appeared at 690 nm with the FWHM about 8 nm. The quenching concentration of Cr3+ was about 0.04.
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Metadata
Title
Investigation of the structural, morphological and luminescence properties of MgAl2O4:Cr3+ nano powders
Authors
Yan Hao
Kaipeng Wu
Publication date
18-06-2019
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 14/2019
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-019-01678-2

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