Light scattering by lithium tantalate at room temperature

Detalhes bibliográficos
Autor(a) principal: Penna, Antonio Fernando S.
Data de Publicação: 1976
Outros Autores: Chaves, Alaor Silverio, Andrade, Pedro da Rocha, Porto, Sergio P.S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/104166
Resumo: The 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.
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spelling Penna, Antonio Fernando S.Chaves, Alaor SilverioAndrade, Pedro da RochaPorto, Sergio P.S.2014-10-04T02:13:23Z19760556-2805http://hdl.handle.net/10183/104166000146416The 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.application/pdfengPhysical review. B, Solid state. New York. Vol. 13, no. 11 (June 1976), p. 4907-4917Física da matéria condensadaEspectroscopia RamanLight scattering by lithium tantalate at room temperatureEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT000146416.pdf.txt000146416.pdf.txtExtracted Texttext/plain31141http://www.lume.ufrgs.br/bitstream/10183/104166/2/000146416.pdf.txt6e9c0f3699a9455f06e2c9bc4f5bee22MD52ORIGINAL000146416.pdf000146416.pdfTexto completo (inglês)application/pdf1111600http://www.lume.ufrgs.br/bitstream/10183/104166/1/000146416.pdf448102cd80a9dec520d4405530b8b3f9MD51THUMBNAIL000146416.pdf.jpg000146416.pdf.jpgGenerated Thumbnailimage/jpeg1887http://www.lume.ufrgs.br/bitstream/10183/104166/3/000146416.pdf.jpg67b7e7f5d15d70ab6f2e8fddfa2e546dMD5310183/1041662022-04-20 04:47:10.939569oai:www.lume.ufrgs.br:10183/104166Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2022-04-20T07:47:10Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Light scattering by lithium tantalate at room temperature
title Light scattering by lithium tantalate at room temperature
spellingShingle Light scattering by lithium tantalate at room temperature
Penna, Antonio Fernando S.
Física da matéria condensada
Espectroscopia Raman
title_short Light scattering by lithium tantalate at room temperature
title_full Light scattering by lithium tantalate at room temperature
title_fullStr Light scattering by lithium tantalate at room temperature
title_full_unstemmed Light scattering by lithium tantalate at room temperature
title_sort Light scattering by lithium tantalate at room temperature
author Penna, Antonio Fernando S.
author_facet Penna, Antonio Fernando S.
Chaves, Alaor Silverio
Andrade, Pedro da Rocha
Porto, Sergio P.S.
author_role author
author2 Chaves, Alaor Silverio
Andrade, Pedro da Rocha
Porto, Sergio P.S.
author2_role author
author
author
dc.contributor.author.fl_str_mv Penna, Antonio Fernando S.
Chaves, Alaor Silverio
Andrade, Pedro da Rocha
Porto, Sergio P.S.
dc.subject.por.fl_str_mv Física da matéria condensada
Espectroscopia Raman
topic Física da matéria condensada
Espectroscopia Raman
description The 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.
publishDate 1976
dc.date.issued.fl_str_mv 1976
dc.date.accessioned.fl_str_mv 2014-10-04T02:13:23Z
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Physical review. B, Solid state. New York. Vol. 13, no. 11 (June 1976), p. 4907-4917
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