High-pressure Raman spectroscopy and lattice-dynamics calculations on scintillating MgWO4: Comparison with isomorphic compounds

Raman scattering measurements and lattice-dynamics calculations were performed on magnesium tungstate (MgWO4) under high pressure up to 41 GPa. Experiments were carried out on a selection of pressure media. The influence of nonhydrostaticity on the structural properties of MgWO4 and isomorphic compo...

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Autores: Ruiz Fuertes, Javier|||0000-0003-3175-7754, Errandonea, D., Lopez-Moreno, S., González Gómez, Jesús Antonio|||0000-0002-0381-6393, Gomis, O., Vilaplana, R., Manjon, F. J., Muñoz, A., Rodríguez-Hernández, P., Friedrich, A., Tupitsyna, I. A., Nagornaya, L. L.
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/21943
Acceso en línea:http://hdl.handle.net/10902/21943
Access Level:acceso abierto
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spelling High-pressure Raman spectroscopy and lattice-dynamics calculations on scintillating MgWO4: Comparison with isomorphic compoundsRuiz Fuertes, Javier|||0000-0003-3175-7754Errandonea, D.Lopez-Moreno, S.González Gómez, Jesús Antonio|||0000-0002-0381-6393Gomis, O.Vilaplana, R.Manjon, F. J.Muñoz, A.Rodríguez-Hernández, P.Friedrich, A.Tupitsyna, I. A.Nagornaya, L. L.Raman scattering measurements and lattice-dynamics calculations were performed on magnesium tungstate (MgWO4) under high pressure up to 41 GPa. Experiments were carried out on a selection of pressure media. The influence of nonhydrostaticity on the structural properties of MgWO4 and isomorphic compounds is examined. Under quasihydrostatic conditions, a phase transition was found at 26 GPa in MgWO4. The high-pressure phase is tentatively assigned to a triclinic structure similar to that of CuWO4. We also report and discuss the Raman symmetries, frequencies, and pressure coefficients in the low- and high-pressure phases. In addition, the Raman frequencies for different wolframites are compared and the variation of the mode frequency with the reduced mass across the family is investigated. Finally, the accuracy of theoretical calculations is systematically discussed for MgWO4, MnWO4, FeWO4, CoWO4, NiWO4, ZnWO4, and CdWO4.Research was financed by the Spanish Ministerio de Educacion y Ciencia (MEC) under Grants No. MAT2010-21270-C04-01/02/04, and No. CSD-2007-00045.American Physical SocietyUniversidad de Cantabria20112011-06-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttp://hdl.handle.net/10902/21943Physical review. B, 2011, 83, 214112reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/219432026-06-02T12:39:31Z
dc.title.none.fl_str_mv High-pressure Raman spectroscopy and lattice-dynamics calculations on scintillating MgWO4: Comparison with isomorphic compounds
title High-pressure Raman spectroscopy and lattice-dynamics calculations on scintillating MgWO4: Comparison with isomorphic compounds
spellingShingle High-pressure Raman spectroscopy and lattice-dynamics calculations on scintillating MgWO4: Comparison with isomorphic compounds
Ruiz Fuertes, Javier|||0000-0003-3175-7754
title_short High-pressure Raman spectroscopy and lattice-dynamics calculations on scintillating MgWO4: Comparison with isomorphic compounds
title_full High-pressure Raman spectroscopy and lattice-dynamics calculations on scintillating MgWO4: Comparison with isomorphic compounds
title_fullStr High-pressure Raman spectroscopy and lattice-dynamics calculations on scintillating MgWO4: Comparison with isomorphic compounds
title_full_unstemmed High-pressure Raman spectroscopy and lattice-dynamics calculations on scintillating MgWO4: Comparison with isomorphic compounds
title_sort High-pressure Raman spectroscopy and lattice-dynamics calculations on scintillating MgWO4: Comparison with isomorphic compounds
dc.creator.none.fl_str_mv Ruiz Fuertes, Javier|||0000-0003-3175-7754
Errandonea, D.
Lopez-Moreno, S.
González Gómez, Jesús Antonio|||0000-0002-0381-6393
Gomis, O.
Vilaplana, R.
Manjon, F. J.
Muñoz, A.
Rodríguez-Hernández, P.
Friedrich, A.
Tupitsyna, I. A.
Nagornaya, L. L.
author Ruiz Fuertes, Javier|||0000-0003-3175-7754
author_facet Ruiz Fuertes, Javier|||0000-0003-3175-7754
Errandonea, D.
Lopez-Moreno, S.
González Gómez, Jesús Antonio|||0000-0002-0381-6393
Gomis, O.
Vilaplana, R.
Manjon, F. J.
Muñoz, A.
Rodríguez-Hernández, P.
Friedrich, A.
Tupitsyna, I. A.
Nagornaya, L. L.
author_role author
author2 Errandonea, D.
Lopez-Moreno, S.
González Gómez, Jesús Antonio|||0000-0002-0381-6393
Gomis, O.
Vilaplana, R.
Manjon, F. J.
Muñoz, A.
Rodríguez-Hernández, P.
Friedrich, A.
Tupitsyna, I. A.
Nagornaya, L. L.
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad de Cantabria
description Raman scattering measurements and lattice-dynamics calculations were performed on magnesium tungstate (MgWO4) under high pressure up to 41 GPa. Experiments were carried out on a selection of pressure media. The influence of nonhydrostaticity on the structural properties of MgWO4 and isomorphic compounds is examined. Under quasihydrostatic conditions, a phase transition was found at 26 GPa in MgWO4. The high-pressure phase is tentatively assigned to a triclinic structure similar to that of CuWO4. We also report and discuss the Raman symmetries, frequencies, and pressure coefficients in the low- and high-pressure phases. In addition, the Raman frequencies for different wolframites are compared and the variation of the mode frequency with the reduced mass across the family is investigated. Finally, the accuracy of theoretical calculations is systematically discussed for MgWO4, MnWO4, FeWO4, CoWO4, NiWO4, ZnWO4, and CdWO4.
publishDate 2011
dc.date.none.fl_str_mv 2011
2011-06-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10902/21943
url http://hdl.handle.net/10902/21943
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv Physical review. B, 2011, 83, 214112
reponame:UCrea Repositorio Abierto de la Universidad de Cantabria
instname:Universidad de Cantabria (UC)
instname_str Universidad de Cantabria (UC)
reponame_str UCrea Repositorio Abierto de la Universidad de Cantabria
collection UCrea Repositorio Abierto de la Universidad de Cantabria
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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