Photoluminescence and Raman spectroscopy studies of low-temperature γ-Al2O3 phases synthesized from different precursors

Raman and photoluminescence spectra of γ-Al2O3 samples synthesized from crystalline boehmite and nanodispersed pseudoboehmite. [Display omitted] •PL study reveals the presence of Mn4+ only in γ∗-Al2O3 and the absence one in γ-Al2O3.•PL of F-centers in γ-, γ∗-Al2O3 correlating to the emission of Mn4+...

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Bibliographic Details
Published in:Optical materials 2016-03, Vol.53, p.87-93
Main Authors: Baronskiy, Mark, Rastorguev, Alexander, Zhuzhgov, Aleksey, Kostyukov, Anton, Krivoruchko, Oleg, Snytnikov, Valeriy
Format: Article
Language:English
Subjects:
Alumina
Local structure
Photoluminescence
Raman spectroscopy
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Summary:Raman and photoluminescence spectra of γ-Al2O3 samples synthesized from crystalline boehmite and nanodispersed pseudoboehmite. [Display omitted] •PL study reveals the presence of Mn4+ only in γ∗-Al2O3 and the absence one in γ-Al2O3.•PL of F-centers in γ-, γ∗-Al2O3 correlating to the emission of Mn4+ in these phases.•Raman spectra of γ-, γ∗-Al2O3 demonstrate strong differences in spinal structures. Spectroscopic features of the local structure of high purity (with the content of impurities
ISSN:0925-3467
1873-1252
DOI:10.1016/j.optmat.2016.01.029