Lattice dynamic investigation of the phonon wavenumbers of CaGeO3 perovskite

Authors
Gupta, HC Ashdhir, P
Citation
Hc. Gupta et P. Ashdhir, Lattice dynamic investigation of the phonon wavenumbers of CaGeO3 perovskite, J RAMAN SP, 30(6), 1999, pp. 493-495
Citations number
5
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
JOURNAL OF RAMAN SPECTROSCOPY
ISSN journal
03770486 → ACNP
Volume
30
Issue
6
Year of publication
1999
Pages
493 - 495
Database
ISI
SICI code
0377-0486(199906)30:6<493:LDIOTP>2.0.ZU;2-G
Abstract
A short-range force constant model was applied to investigate the phonons i n CaGeO3 perovskite in the orthorhombic phase. The calculations with six st retching and bending force constants provide good agreement for the Raman w avenumbers. The correct assignments of the observed Raman wavenumbers were made based on the present calculations. The infrared wavenumbers have also been assigned for the first time. Copyright (C) 1999 John Wiley & Sons, Ltd .