New high-pressure phase and equation of state of Ce2Zr2O8

In this paper we report a new high-pressure rhombohedral phase of Ce2Zr2O8 observed in high-pressure angle-dispersive x-ray diffraction and Raman spectroscopy studies up to nearly 12 GPa. The ambient-pressure cubic phase of Ce2Zr2O8 transforms to a rhombohedral structure beyond 5 GPa with a feeble d...

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Autores: Errandonea, Daniel, Kumar, R.S., Achary, S.N., Shukla, R., Tyagi, A.K., Gomis, O.|||0000-0001-6763-0638, Manjón, Francisco-Javier|||0000-0002-3926-1705
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/35868
Acceso en línea:https://riunet.upv.es/handle/10251/35868
Access Level:acceso abierto
Palabra clave:high pressure
Crystal structure
x-ray diffraction
powders
fluorite
raman spectra
phase transitions
Oxidation
Equations of state
rietveld refinement
FISICA APLICADA
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repository_id_str
spelling New high-pressure phase and equation of state of Ce2Zr2O8Errandonea, DanielKumar, R.S.Achary, S.N.Shukla, R.Tyagi, A.K.Gomis, O.|||0000-0001-6763-0638Manjón, Francisco-Javier|||0000-0002-3926-1705high pressureCrystal structurex-ray diffractionpowdersfluoriteraman spectraphase transitionsOxidationEquations of staterietveld refinementFISICA APLICADAIn this paper we report a new high-pressure rhombohedral phase of Ce2Zr2O8 observed in high-pressure angle-dispersive x-ray diffraction and Raman spectroscopy studies up to nearly 12 GPa. The ambient-pressure cubic phase of Ce2Zr2O8 transforms to a rhombohedral structure beyond 5 GPa with a feeble distortion in the lattice. The pressure evolution of the unit-cell volume showed a change in compressibility above 5 GPa. The unit-cell parameters of the high-pressure rhombohedral phase at 12.1 GPa are a h = 14.6791(3) Å, c h = 17.9421(5) Å, and V = 3348.1(1) Å3. The structure relations between the parent cubic (P213) and rhombohedral (P32) phases were obtained via group-subgroup relations. All the Raman modes of the cubic phase showed linear evolution with pressure, with the hardest one at 197 cm¿1. Some Raman modes of the high-pressure phase have a non-linear evolution with pressure, and softening of one low-frequency mode with pressure is found. The compressibility, equation of state, and pressure coefficients of Raman modes of Ce2Zr2O8 are also reported. © 2012 American Institute of PhysicsAmerican Institute of Physics (AIP)Departamento de Física AplicadaEscuela Técnica Superior de Ingeniería Aeroespacial y Diseño IndustrialInstituto de Diseño para la Fabricación y Producción AutomatizadaEscuela Politécnica Superior de AlcoyCentro de Tecnologías Físicas: Acústica, Materiales y AstrofísicaRepositorio Institucional de la Universitat Politècnica de València Riunet20122012-03-08journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/35868reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Reserva de todos los derechoshttp://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/358682026-06-13T07:49:27Z
dc.title.none.fl_str_mv New high-pressure phase and equation of state of Ce2Zr2O8
title New high-pressure phase and equation of state of Ce2Zr2O8
spellingShingle New high-pressure phase and equation of state of Ce2Zr2O8
Errandonea, Daniel
high pressure
Crystal structure
x-ray diffraction
powders
fluorite
raman spectra
phase transitions
Oxidation
Equations of state
rietveld refinement
FISICA APLICADA
title_short New high-pressure phase and equation of state of Ce2Zr2O8
title_full New high-pressure phase and equation of state of Ce2Zr2O8
title_fullStr New high-pressure phase and equation of state of Ce2Zr2O8
title_full_unstemmed New high-pressure phase and equation of state of Ce2Zr2O8
title_sort New high-pressure phase and equation of state of Ce2Zr2O8
dc.creator.none.fl_str_mv Errandonea, Daniel
Kumar, R.S.
Achary, S.N.
Shukla, R.
Tyagi, A.K.
Gomis, O.|||0000-0001-6763-0638
Manjón, Francisco-Javier|||0000-0002-3926-1705
author Errandonea, Daniel
author_facet Errandonea, Daniel
Kumar, R.S.
Achary, S.N.
Shukla, R.
Tyagi, A.K.
Gomis, O.|||0000-0001-6763-0638
Manjón, Francisco-Javier|||0000-0002-3926-1705
author_role author
author2 Kumar, R.S.
Achary, S.N.
Shukla, R.
Tyagi, A.K.
Gomis, O.|||0000-0001-6763-0638
Manjón, Francisco-Javier|||0000-0002-3926-1705
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Física Aplicada
Escuela Técnica Superior de Ingeniería Aeroespacial y Diseño Industrial
Instituto de Diseño para la Fabricación y Producción Automatizada
Escuela Politécnica Superior de Alcoy
Centro de Tecnologías Físicas: Acústica, Materiales y Astrofísica
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv high pressure
Crystal structure
x-ray diffraction
powders
fluorite
raman spectra
phase transitions
Oxidation
Equations of state
rietveld refinement
FISICA APLICADA
topic high pressure
Crystal structure
x-ray diffraction
powders
fluorite
raman spectra
phase transitions
Oxidation
Equations of state
rietveld refinement
FISICA APLICADA
description In this paper we report a new high-pressure rhombohedral phase of Ce2Zr2O8 observed in high-pressure angle-dispersive x-ray diffraction and Raman spectroscopy studies up to nearly 12 GPa. The ambient-pressure cubic phase of Ce2Zr2O8 transforms to a rhombohedral structure beyond 5 GPa with a feeble distortion in the lattice. The pressure evolution of the unit-cell volume showed a change in compressibility above 5 GPa. The unit-cell parameters of the high-pressure rhombohedral phase at 12.1 GPa are a h = 14.6791(3) Å, c h = 17.9421(5) Å, and V = 3348.1(1) Å3. The structure relations between the parent cubic (P213) and rhombohedral (P32) phases were obtained via group-subgroup relations. All the Raman modes of the cubic phase showed linear evolution with pressure, with the hardest one at 197 cm¿1. Some Raman modes of the high-pressure phase have a non-linear evolution with pressure, and softening of one low-frequency mode with pressure is found. The compressibility, equation of state, and pressure coefficients of Raman modes of Ce2Zr2O8 are also reported. © 2012 American Institute of Physics
publishDate 2012
dc.date.none.fl_str_mv 2012
2012-03-08
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/35868
url https://riunet.upv.es/handle/10251/35868
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
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
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
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Institute of Physics (AIP)
publisher.none.fl_str_mv American Institute of Physics (AIP)
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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