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A Raman study of cation-disorder transition temperature of natural MgAl2O4 spinel

Title
A Raman study of cation-disorder transition temperature of natural MgAl2O4 spinel
Authors
Minh N.V.Yang I.-S.
Ewha Authors
양인상
SCOPUS Author ID
양인상scopus
Issue Date
2004
Journal Title
Vibrational Spectroscopy
ISSN
0924-2031JCR Link
Citation
Vibrational Spectroscopy vol. 35, no. 41276, pp. 93 - 96
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Conference Paper
Abstract
We have measured Raman spectra of samples of natural MgAl2O 4 spinel before and after annealing at different temperatures and quenching. The appearance of 727cm-1 mode in the samples annealed at 800°C or higher is believed to be due to the cation-disorder of spinel. The full-width-at-the-half-maximum (FWHM) values of the 410cm-1 mode as a function of the annealing temperature clearly shows an abrupt increase at the temperature between 700 and 750°C as the annealing temperature increases. Thus, we find the annealing temperature at which the cation-disorder occurred in the natural MgAl2O4 spinel to be between 700 and 750°C. © 2004 Elsevier B.V. All rights reserved.
DOI
10.1016/j.vibspec.2003.12.013
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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