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dc.contributor.authorPenna, Antonio Fernando S.pt_BR
dc.contributor.authorChaves, Alaor Silveriopt_BR
dc.contributor.authorAndrade, Pedro da Rochapt_BR
dc.contributor.authorPorto, Sergio P.S.pt_BR
dc.date.accessioned2014-10-04T02:13:23Zpt_BR
dc.date.issued1976pt_BR
dc.identifier.issn0556-2805pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/104166pt_BR
dc.description.abstractThe room-temperature Raman spectra of LiTa03 for all symmetry phonons are investigated. We make a new assignment of the phonons, which agrees with the selection rules of a C3 symmetry instead of C3V, contrary to Kaminow and Johnston's previous work. The oblique phonon dispersions are obtained and tum out to be consistent with our phonon assignments. We obtain also the polariton dispersion curve and, from it, the lowftequency dielectric constant.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. B, Solid state. New York. Vol. 13, no. 11 (June 1976), p. 4907-4917pt_BR
dc.rightsOpen Accessen
dc.subjectFísica da matéria condensadapt_BR
dc.subjectEspectroscopia ramanpt_BR
dc.titleLight scattering by lithium tantalate at room temperaturept_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000146416pt_BR
dc.type.originEstrangeiropt_BR


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