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Lattice dynamics study of nanocrystalline yttrium gallium garnet at high pressure

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Lattice dynamics study of nanocrystalline yttrium gallium garnet at high pressure

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dc.contributor.author Monteseguro, V. es_ES
dc.contributor.author Rodríguez Hernández, Plácida es_ES
dc.contributor.author Vilaplana Cerda, Rosario Isabel es_ES
dc.contributor.author Manjón Herrera, Francisco Javier es_ES
dc.contributor.author Venkatramu, V. es_ES
dc.contributor.author Errandonea, Daniel es_ES
dc.contributor.author Lavin, V. es_ES
dc.contributor.author Muñoz, Alfonso es_ES
dc.date.accessioned 2015-12-30T09:03:09Z
dc.date.issued 2014-06-19
dc.identifier.issn 1932-7447
dc.identifier.uri http://hdl.handle.net/10251/59294
dc.description.abstract This work reports an experimental and theoretical lattice dynamics study of nanocrystalline Y3Ga5O12 (YGG) garnet at high pressures. Raman scattering measurements in nanocrystalline Tm3+-doped YGG garnet performed up to 29 GPa have been compared to lattice dynamics ab initio calculations for bulk garnet carried out up to 89 GPa. Good agreement between the theoretical vibrational modes of bulk crystal and the experimental modes measured in the nanocrystals is found. The contribution of GaO4 tetrahedra and GaO6 octahedra to the different phonon modes of YGG is discussed on the basis of the calculated total and partial phonon density of states. Symmetries, frequencies, and pressure coefficients of the Raman-active modes are discussed. Moreover, the calculated infrared-active modes and their pressure dependence are reported. No pressure-induced phase transition has been observed in nano-YGG up to 29 GPa. This is in agreement with theoretical results, which show a mechanical instability of YGG above 84 GPa, similar to what occurs in Gd3Ga5O12. es_ES
dc.description.sponsorship This work has been supported by Ministerio de Ciencia e Innovacion of Spain (MICINN) under the National Program of Materials (MAT2010-21270-C04-01/02/03/04) and the Consolider-Ingenio 2010 Program (MALTA CSD2007-0045) and by the EU-FEDER funds. V. Monteseguro, V. Lavin, and V. Venkatramu are also grateful to MINECO from Spain and Department of Science and Technology of India for financial support within the Indo-Spanish Joint Programme of Cooperation in Science and Technology (DST-INT-Spain-P-38-11/PRI-PIBIN-2011-1153). V. Monteseguro thanks MICINN for the FPI grant (BES-2011-044596). R. Vilaplana and F. J. Manjon acknowledge financial support from Generalitat Valenciana through project GVA-ACOMP-2013-012 and by the Vicerrectorado de Investigacion y Desarrollo of the Universitat Politecnica de Valencia through projects UPV2011-0914 PAID-05-11 and UPV2011-0966 PAID-06-11. V. Venkatramu is grateful to Council of Scientific and Industrial Research (CSIR, New Delhi) for the sanction of major research project (No. 03(1229)/12/EMR-II, dated 16th April, 2012). en_EN
dc.language Inglés es_ES
dc.publisher American Chemical Society es_ES
dc.relation Ministerio de Ciencia e Innovacion of Spain (MICINN) under the National Program of Materials MAT2010-21270-C04-01/02/03/04 es_ES
dc.relation Consolider-Ingenio Program MALTA CSD2007-0045 es_ES
dc.relation EU-FEDER funds es_ES
dc.relation MINECO from Spain es_ES
dc.relation Joint Programme of Cooperation in Science and Technology DST-INT-Spain-P-38-11/PRI-PIBIN-2011-1153 es_ES
dc.relation MICINN BES-2011-044596 es_ES
dc.relation Generalitat Valenciana GVA-ACOMP-2013-012 es_ES
dc.relation Vicerrectorado de Investigacion y Desarrollo of the Universitat Politecnica de Valencia UPV2011-0914 PAID-05-11 UPV2011-0966 PAID-06-11 es_ES
dc.relation Council of Scientific and Industrial Research (CSIR, New Delhi) 03(1229)/12/EMR-II es_ES
dc.relation.ispartof Journal of Physical Chemistry C es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Electronic-Properties es_ES
dc.subject Aluminum es_ES
dc.subject Temperature es_ES
dc.subject Y3AL5o12 es_ES
dc.subject Phonons es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title Lattice dynamics study of nanocrystalline yttrium gallium garnet at high pressure es_ES
dc.type Artículo es_ES
dc.embargo.lift 10000-01-01
dc.embargo.terms forever es_ES
dc.identifier.doi 10.1021/jp501570c
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Diseño para la Fabricación y Producción Automatizada - Institut de Disseny per a la Fabricació i Producció Automatitzada es_ES
dc.contributor.affiliation Universitat Politècnica de València. Centro de Tecnologías Físicas: Acústica, Materiales y Astrofísica - Centre de Tecnologies Físiques: Acústica, Materials i Astrofísica es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada es_ES
dc.description.bibliographicCitation Monteseguro, V.; Rodríguez Hernández, P.; Vilaplana Cerda, RI.; Manjón Herrera, FJ.; Venkatramu, V.; Errandonea, D.; Lavin, V.... (2014). Lattice dynamics study of nanocrystalline yttrium gallium garnet at high pressure. Journal of Physical Chemistry C. 118(24):13177-13185. doi:10.1021/jp501570c es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1021/jp501570c es_ES
dc.description.upvformatpinicio 13177 es_ES
dc.description.upvformatpfin 13185 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 118 es_ES
dc.description.issue 24 es_ES
dc.relation.senia 269205 es_ES
dc.identifier.eissn 1932-7455


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