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Vibrational spectroscopic study of Sr 2 ZnTeO 6 double perovskites
Author(s) -
Dias Anderson,
Subodh Ganesanpotti,
Sebastian Mailadil T.,
Moreira Roberto L.
Publication year - 2010
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.2494
Subject(s) - raman spectroscopy , phonon , tetragonal crystal system , perovskite (structure) , infrared , microwave , diffraction , dielectric , ceramic , chemistry , molecular vibration , group (periodic table) , infrared spectroscopy , analytical chemistry (journal) , space group , materials science , x ray crystallography , crystallography , crystal structure , optics , condensed matter physics , physics , optoelectronics , organic chemistry , chromatography , quantum mechanics
Sr 2 ZnTeO 6 ceramics were prepared by the solid‐state route and their vibrational phonon modes were investigated using optical spectroscopic techniques, for the first time. X‐ray diffraction (XRD) and Raman and infrared spectroscopies were employed to investigate the structures of these perovskite materials and the results analysed together with group‐theoretical predictions. The number and behaviour of the first‐order modes observed in both spectroscopic techniques are in agreement with the calculations for a tetragonal I 4/ m space group. The complete set of the optical phonon modes was determined, and the intrinsic dielectric properties of the materials were evaluated, allowing us to discuss their potential application in microwave (MW) circuitry. Copyright © 2009 John Wiley & Sons, Ltd.