Vibrational interactions of tetrahedra in silicate glasses and crystals. I: Calculations on ideal silicate-aluminate-germanate structural units

Calculated Raman and ir intensities and frequencies yield good qualitative agreement with observed glass and crystal spectra. In Si-Al and Si-Ge structures, oscillation of bridging O may be important in the high-frequency Raman. High-frequency antisymmetric (ir- and Raman-active) and low- to mid-fre...

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Bibliographic Details
Published inPhysics and chemistry of minerals Vol. 14; no. 1; pp. 80 - 93
Main Author DOWTY, E
Format Journal Article
LanguageEnglish
Published Berlin Springer 1987
Subjects
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Infrared and raman spectra and scattering
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Physics
Raman scattering
Intensity
Crystals
Glass
Infrared absorption
Aluminosilicates
Force constant
Theoretical study
Amorphous state
Silicates
Vibrational mode
Inorganic compound
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Summary:Calculated Raman and ir intensities and frequencies yield good qualitative agreement with observed glass and crystal spectra. In Si-Al and Si-Ge structures, oscillation of bridging O may be important in the high-frequency Raman. High-frequency antisymmetric (ir- and Raman-active) and low- to mid-frequency symmetric (Raman-active) T-O stretching modes may be identified with individual T-O-T groups. 65 refs.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0342-1791
1432-2021
DOI:10.1007/BF00311151