Raman and infrared spectra of doped La 8+ x  Sr 2− y  (SiO 4 ) 6 O 2+δ  compounds compared to the   ab initio  ‐obtained spectroscopic characteristics of fully stoichiometric La 8 Sr 2 (SiO 4 ) 6 O 2 | Zendy

Smirnov M. | Zendy; Sukhomlinov S. | Zendy; Mirgorodsky A. | Zendy; Masson O. | Zendy; Béchade E. | Zendy; Colas M. | Zendy; MerleMéjean T. | Zendy; Julien I. | Zendy; Thomas P. | Zendy

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Raman and infrared spectra of doped La 8+ x Sr 2− y (SiO 4 ) 6 O 2+δ compounds compared to the ab initio ‐obtained spectroscopic characteristics of fully stoichiometric La 8 Sr 2 (SiO 4 ) 6 O 2

Author(s) -

Smirnov M.,

Sukhomlinov S.,

Mirgorodsky A.,

Masson O.,

Béchade E.,

Colas M.,

MerleMéjean T.,

Julien I.,

Thomas P.

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.2626

Subject(s) - raman spectroscopy , infrared spectroscopy , infrared , chemistry , analytical chemistry (journal) , doping , ion , stoichiometry , ionic bonding , conductivity , oxygen , ab initio quantum chemistry methods , materials science , molecule , physics , optics , optoelectronics , organic chemistry , chromatography

Vibrational spectroscopy data were used to gain insight into the possible locations of extra oxygen ions introduced into La 8+ x Sr 2− y (SiO 4 ) 6 O 2+δ compounds to raise their ionic conductivity. Perturbations observed in the Raman and infrared spectra of these compounds with increasing δ were explained by using the ab initio calculation results for the fully stoichiometric ( x = y = δ = 0) lattice. This allowed the inference that the extra oxygen ions are incorporated into LaO tunnel‐like fragments inherent in the studied structures. Copyright © 2010 John Wiley & Sons, Ltd.

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