Dias, AndersonMoreira, Roberto Luiz2017-05-222017-05-222010DIAS, A.; MOREIRA, R. L. Crystal structure and phonon modes of ilmenite-type NaBiO3 investigated by Raman and infrared spectroscopies. Journal of Raman Spectroscopy, v. 41, p. 702–706, 2010. Disponível em: <http://onlinelibrary.wiley.com/doi/10.1002/jrs.2496/abstract>. Acesso em: 20 abr. 2017.10974555http://www.repositorio.ufop.br/handle/123456789/7772NaBiO3 is an ilmenite-type compound presenting a trigonal structure. In this work, we have performed optical spectroscopic investigations using Raman scattering and infrared reflectivity for this material. By using group-theory calculations, it was possible to determine the number of optically activemodes. Fitting procedures besides Kramers–Kronig (KK) procedures lead to a consistent collection of phononmodes. The Raman spectrumshowed nine active first-ordermodes, while the infrared one revealed eight polar phonons, in good agreement with the theoretical predictions. The results allowed us to confirm the R3 (#148) space group for this compound, and to establish a set of active phonons not yet reported in the literature.en-USrestritoPerovskitesRaman spectroscopyInfraredSodium bismuthateArtigo publicado em periodicohttp://onlinelibrary.wiley.com/doi/10.1002/jrs.2496/abstracthttps://doi.org/10.1002/jrs.2496