The temperature dependence of the Raman T-2g lattice mode in K2S crystals

Authors
Bertheville, B Bill, H
Citation
B. Bertheville et H. Bill, The temperature dependence of the Raman T-2g lattice mode in K2S crystals, SOL ST ION, 139(1-2), 2001, pp. 159-162
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE IONICS
ISSN journal
01672738 → ACNP
Volume
139
Issue
1-2
Year of publication
2001
Pages
159 - 162
Database
ISI
SICI code
0167-2738(200101)139:1-2<159:TTDOTR>2.0.ZU;2-Z
Abstract
The first-order Raman spectrum of K2S was measured over the temperature ran ge from 10 to 742 K. The temperature dependence of the linewidth can be exp lained using results from the anharmonic lattice dynamics approach. Both th e cubic and the quartic anharmonic interactions are of importance for this system. At 293 K, the Raman line is at omega (T2g) = 128 cm(-1) with a full width at half maximum Gamma (T2g) = 2.9 cm(-1) (C) 2001 Elsevier Science B .V. All rights reserved.