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Vibrational spectroscopic study of the compound TiTa2O7

Authors
Journal
Spectrochimica Acta Part A Molecular Spectroscopy
0584-8539
Publisher
Elsevier
Publication Date
Volume
39
Issue
3
Identifiers
DOI: 10.1016/0584-8539(83)80145-7

Abstract

Abstract The Raman and i.r. absorption spectra of polycrystalline TiTa 2O 7 were recorded at room temperature. No systematic coincidences in frequency were observed in the two vibrational spectra and this may be considered as indicating that TiTa 2O 7 crystallizes with an inversion symmetry. The observed Raman bands in the high frequency region are interpreted as due to corner and edge-shared octahedra. The existence of a Raman band at 1020 cm −1 indicates the presence of a short cation—oxygen distance and this is in agreement with the structural analog TiNb 2O 7.

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