REVERSIBLE MESOSCOPIC STRUCTURAL TRANSFORMATIONS IN VACUUM-EVAPORATEDAMORPHOUS GE30SE70 FILM STUDIED BY RAMAN-SCATTERING

Authors
TAKEUCHI H MATSUDA O MURASE K
Citation
H. Takeuchi et al., REVERSIBLE MESOSCOPIC STRUCTURAL TRANSFORMATIONS IN VACUUM-EVAPORATEDAMORPHOUS GE30SE70 FILM STUDIED BY RAMAN-SCATTERING, Journal of non-crystalline solids, 238(1-2), 1998, pp. 91-97
Citations number
22
Categorie Soggetti
Material Science, Ceramics
Journal title
Journal of non-crystalline solids → ACNP
ISSN journal
00223093
Volume
238
Issue
1-2
Year of publication
1998
Pages
91 - 97
Database
ISI
SICI code
0022-3093(1998)238:1-2<91:RMSTIV>2.0.ZU;2-9
Abstract
The Raman scattering properties at high temperatures in non-crystallin e Ge30Se70 prepared by melt-quenching (MQ) and vacuum evaporation (VE) are investigated from the view point of the structural difference bet ween them. In the VE film with increasing temperatures, the mesoscopic structure containing edge-sharing GeSe4/2 tetrahedra changes to the s tructure only containing the corner-sharing tetrahedra even at tempera tures well below the glass transition temperature. In the MQ-glass, th e structure containing edge-sharing tetrahedra is more stable than tha t in the VE-film. (C) 1998 Elsevier Science B.V. All rights reserved.