Marí-Guaita, J.; Gallego-Parra, S.; Sans-Tresserras, JÁ.; Velázquez, M.; Veber, P.; Rodríguez-Hernández, P.; Manjón, F.... (2021). Lattice dynamics study of (Gd1-xYbx)(2)O-3(x=0.11) at high pressure. Journal of Alloys and Compounds. 871:1-9. https://doi.org/10.1016/j.jallcom.2021.159525
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/200001
Title:
|
Lattice dynamics study of (Gd1-xYbx)(2)O-3(x=0.11) at high pressure
|
Author:
|
Marí-Guaita, Julia
Gallego-Parra, Samuel
Sans-Tresserras, Juan Ángel
Velázquez, M.
Veber, Phillipe
Rodríguez-Hernández, P.
Manjón, Francisco-Javier
Muñoz, A.
|
UPV Unit:
|
Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny
|
Issued date:
|
|
Abstract:
|
[EN] In this study, we report an experimental investigation of (Gd1-xYbx)(2)O-3 under high pressure by means of Raman scattering measurements complemented with ab initio calculations in pure Gd2O3. Raman spec-troscopy of ...[+]
[EN] In this study, we report an experimental investigation of (Gd1-xYbx)(2)O-3 under high pressure by means of Raman scattering measurements complemented with ab initio calculations in pure Gd2O3. Raman spec-troscopy of compressed (Gd1-xYbx)(2)O-3 (x = 0.11) revealed a first phase transition from the cubic Ia (3) over bar phase (C-type) to the monoclinic C2/m phase (B-type) at 6.2 GPa followed by a second phase transition towards the trigonal P (3) over bar m1 phase (A-type) at 9.8 GPa. This sequence of phase transitions is different to that pre-viously reported for pure Gd2O3. A phase transition from the trigonal to the monoclinic phase is observed on downstroke, so the B-type phase remains metastable at room pressure, as observed in all C-type rare earth sesquioxides. Theoretical calculations have helped to identify the different polymorphs and to assign the symmetry of the observed first-order Raman-active modes in the three phases. The pressure coefficients of the Raman-active modes of the three phases followed under pressure have been reported and compared to those of pure Gd2O3 and other rare-earth sesquioxides.
[-]
|
Subjects:
|
High pressure
,
Raman spectroscopy
,
Rare earth sesquioxides
,
(Gd1-xYbx)(2)O-3
|
Copyrigths:
|
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
|
Source:
|
Journal of Alloys and Compounds. (issn:
0925-8388
)
|
DOI:
|
10.1016/j.jallcom.2021.159525
|
Publisher:
|
Elsevier
|
Publisher version:
|
https://doi.org/10.1016/j.jallcom.2021.159525
|
Project ID:
|
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2017-83295-P/ES/EN BUSCA DE LA REACCION DEL HELIO EN CONDICIONES EXTREMAS/
...[+]
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2017-83295-P/ES/EN BUSCA DE LA REACCION DEL HELIO EN CONDICIONES EXTREMAS/
info:eu-repo/grantAgreement/GVA//PROMETEO%2F2018%2F123//Materiales avanzados para el uso eficiente de la energia (EFIMAT)/
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106383GB-C42/ES/SESQUIOXIDOS Y COMPUESTOS METAVALENTES BAJO CONDICIONES EXTREMAS/
info:eu-repo/grantAgreement/MINECO//RED2018-102612-T//MALTA Consolider Team/
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106383GB-C43/ES/SIMULACIONES AB INITIO DE MATERIALES AVANZADOS BAJO CONDICIONES EXTREMAS/
info:eu-repo/grantAgreement/MINECO//MAT2016-75586-C4-2-P//Compuestos ABO3 y A2X3 en condiciones extremas de presión y temperatura/
info:eu-repo/grantAgreement/MINECO//RYC-2015-17482/ES/RYC-2015-17482/
info:eu-repo/grantAgreement/MINECO//MAT2016-75586-C4-3-P/
[-]
|
Thanks:
|
This work was supported by the Generalitat Valenciana under Project PROMETEO 2018/123-EFIMAT and by the Spanish Ministerio de Ciencia e Innovacion and Agencia Estatal de Investigacion under Projects MAT2016-75586-C4-2-P/3-P, ...[+]
This work was supported by the Generalitat Valenciana under Project PROMETEO 2018/123-EFIMAT and by the Spanish Ministerio de Ciencia e Innovacion and Agencia Estatal de Investigacion under Projects MAT2016-75586-C4-2-P/3-P, FIS2017-83295-P, and PID2019-106383GB-42/43, as well as through MALTA Consolider Team Research Network (RED2018-102612-T). A. Munoz and P. Rodriguez-Hernandez acknowledge computing time provided by Red Espanola de Supercomputacion (RES) and the MALTA Consolider Team cluster. J.A. Sans acknowledge Ramon y Cajal Fellowship (RYC-2015-17482) for funding support.
[-]
|
Type:
|
Artículo
|