In:
Acta Physica Sinica, Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences, Vol. 43, No. 6 ( 1994), p. 1000-
Abstract:
Fluorescence spectra of nanostructured Al2O3 bulks, which were not doped by Cr, were investigated systematically. The results show that for nanostructured samples of boehmite, η-Al2O3 and γ-Al2O3, two broad fluorescence bands (p1 and p2) appear, and p1 and p2 bands are located in the wavenumber ranges of 20000 to ~14500cm-1 and ~14500 to l1500cm-1, respectively. The p1 band can be attributed to the trace impurity (Cr3+ ions) fluorescence. This is consistent with the previous results for Cr doped Al2O3. The p2 band is a new fluorescence band. Finally, the stress is put on the discussion of conditions and the mechanism of the appearance of the p2 band.
Type of Medium:
Online Resource
ISSN:
1000-3290
,
1000-3290
Language:
Unknown
Publisher:
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Publication Date:
1994
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