Guzmán-Afonso, C.; León-Luis, S.; Sans-Tresserras, JÁ.; González -Silgo, C.; Rodríguez-Hernández, P.; Radescu, S.; muñoz, A.... (2015). Experimental and theoretical study of α–Eu2(MoO4)3 under compression. Journal of Physics: Condensed Matter. 27(46):465401-1-465401-11. doi:10.1088/0953-8984/27/46/465401
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/84613
Title:
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Experimental and theoretical study of α–Eu2(MoO4)3 under compression
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Author:
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Guzmán-Afonso, C.
León-Luis, S.F.
Sans-Tresserras, Juan Ángel
González -Silgo, C.
Rodríguez-Hernández, Plácida
Radescu, S.
Muñoz, A.
López-Solano, J.
Errandonea, D.
Manjón, F.J.
Rodríguez-Mendoza, U.R.
Lavín, V.
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UPV Unit:
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Universitat Politècnica de València. Instituto de Diseño para la Fabricación y Producción Automatizada - Institut de Disseny per a la Fabricació i Producció Automatitzada
Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada
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Issued date:
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Abstract:
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The compression process in the α-phase of europium trimolybdate was revised employing
several experimental techniques. X-ray diffraction (using synchrotron and laboratory radiation
sources), Raman scattering and ...[+]
The compression process in the α-phase of europium trimolybdate was revised employing
several experimental techniques. X-ray diffraction (using synchrotron and laboratory radiation
sources), Raman scattering and photoluminescence experiments were performed up to a
maximum pressure of 21 GPa. In addition, the crystal structure and Raman mode frequencies
have been studied by means of first-principles density functional based methods. Results
suggest that the compression process of α-Eu2(MoO4)3 can be described by three stages.
Below 8 GPa, the α-phase suffers an isotropic contraction of the crystal structure. Between
8 and 12 GPa, the compound undergoes an anisotropic compression due to distortion and
rotation of the MoO4 tetrahedra. At pressures above 12 GPa, the amorphization process starts
without any previous occurrence of a crystalline-crystalline phase transition in the whole range
of pressure. This behavior clearly differs from the process of compression and amorphization
in trimolybdates with β′-phase and tritungstates with α-phase.
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Subjects:
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High pressure
,
X-ray diffraction
,
Raman scaterring
,
Photoluminescence
,
Rare earth trimolybdates
,
α-phase
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Copyrigths:
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Reserva de todos los derechos
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Source:
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Journal of Physics: Condensed Matter. (issn:
0953-8984
) (eissn:
1361-648X
)
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DOI:
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10.1088/0953-8984/27/46/465401
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Publisher:
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IOP Publishing
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Publisher version:
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http://dx.doi.org/10.1088/0953-8984/27/46/465401
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Project ID:
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Ministerio de Economía y Competitividad (MINECO) (Spain), National Program of Materials MAT2010-21270-C04-01/02/03/04, MAT2013-46649-C4- 1/2/3/4-P, MAT2013-43319-P
...[+]
Ministerio de Economía y Competitividad (MINECO) (Spain), National Program of Materials MAT2010-21270-C04-01/02/03/04, MAT2013-46649-C4- 1/2/3/4-P, MAT2013-43319-P
Consolider-Ingenio 2010 MALTA CSD2007-00045
Generalitat Valenciana (Spain) GVA-ACOMP/2014/243
FEDER funds
ACIISI
FSE
FPI program
‘Juan de la Cierva’ program
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Thanks:
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We thank Diamond Light Source for access to beamline I15 (EE1746) that contributed to the results presented here. Part of the diffraction measurements were performed at the 'Servicio Integrado de Difraccion de Rayos X ...[+]
We thank Diamond Light Source for access to beamline I15 (EE1746) that contributed to the results presented here. Part of the diffraction measurements were performed at the 'Servicio Integrado de Difraccion de Rayos X (SIDIX)' of University of La Laguna. This work has been supported by Ministerio de Economia y Competitividad of Spain (MINECO) for the research projects through the National Program of Materials (MAT2010-21270-C04-01/02/03/04, MAT2013-46649-C41/2/3/4-P and MAT2013-43319-P), the Consolider-Ingenio 2010 MALTA (CSD2007-00045), the project of Generalitat Valenciana (GVA-ACOMP/2014/243) and by the European Union FEDER funds. C Guzman-Afonso wishes to thank ACIISI and FSE for a fellowship. J A Sans thanks the FPI and 'Juan de la Cierva' programs for fellowships.
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Type:
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Artículo
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