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Lattice dynamics of tetragonal R2BaCuO5 (R = La, Nd) oxides in the P4/mbm structure

✍ Scribed by H. C. Gupta; V. Sharma


Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
184 KB
Volume
38
Category
Article
ISSN
0377-0486

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πŸ“œ SIMILAR VOLUMES


Lattice dynamic investigation of the Ram
✍ H. C. Gupta; V. Sharma πŸ“‚ Article πŸ“… 2007 πŸ› John Wiley and Sons 🌐 English βš– 108 KB

## Abstract A short‐range force constant model has been applied to investigate the Raman and the infrared wavenumbers in R~2~BaNiO~5~ (R = Y, Gd) in their orthorhombic phase of space group __Immm__. Calculations of zone‐center phonons are made with seven stretching and four bending force constants.

X-ray crystal structures of 1,2,4-tri-O-
✍ Thomas Richter; Peter Luger; Tadashi Hanaya; Hiroshi Yamamoto πŸ“‚ Article πŸ“… 1991 πŸ› Elsevier Science 🌐 English βš– 780 KB

X-ray crystallographic analyses are reported for the two title compounds (8 and 9), of which the former crystallized in two modifications (8n and 8b). In all three structures, the pyranose rings have the %, (D) conformation and the substituents at C-l are axial and those at C-24-4 are equatorial. Th