A short-range force constant model was applied to investigate the phonons in CaGeO 3 perovskite in the orthorhombic phase. The calculations with six stretching and bending force constants provide good agreement for the Raman wavenumbers. The correct assignments of the observed Raman wavenumbers were
Lattice dynamic investigation of the zone center wavenumbers of the cubic A2Ti2O7 pyrochlores
โ Scribed by H. C. Gupta; Sonal Brown; Neelima Rani; V. B. Gohel
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 164 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0377-0486
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๐ SIMILAR VOLUMES
A short-range force constant model was used to investigate the phonons in perovskite in the orthorhombic BaCeO 3 phase. The calculations with just 14 stretching and bending force constants provide good agreement for the Raman wavenumbers. The oxygen-oxygen interatomic forces are included explicitly
Reaction of [Ti 7 O 4 (OEt) 20 ] with benzoic acid results in the formation of the new cluster [Ti 6 O 4 (OEt) 14 (OOCPh) 2 ] with concomitant rearrangement of the cluster structure. The molecular structure of the new cluster was determined by [a]