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Memorias de investigación
Artículos en revistas:
FT-Raman and FT-IR vibrational spectroscopic studies of Sr2RESbO6 (RE = La to Lu and Y) double perovskites
Año:2012
Áreas de investigación
  • Fisica sm -- estructura de materiales
Datos
Descripción
The Sr2RESbO6 double perovskites (RE = La to Lu and Y) were synthesized by ceramic method. The structure and phase purity of the prepared double perovskites were examined by X-ray diffraction pattern and vibrational spectroscopy. A systematic analysis of the compounds structure was carried out for the first time by Raman and IR spectroscopies. A simple inspection of the diffraction patterns shows that these compounds have lower symmetry than the cubic which can be usually found in the Ba2RESbO6 double perovskites. The four active modes (A1g, Eg, and two T2g) in the Raman spectra and the active mode (T1u) in the IR spectra previously described in the spectroscopic data of Ba compounds have changed. In the Sr compounds these modes have been split into its components, in some cases, being active in both types of spectra. According to our data the Sr2RESbO6 double perovskites can be described by a monoclinic symmetry cell, space group P21/n. However, in the cases of Sr2LaSbO6 and Sr2PrSbO6 an alternative structure should be searched by neutron diffraction technique.
Internacional
Si
JCR del ISI
Si
Título de la revista
Journal of Alloys And Compounds
ISSN
0925-8388
Factor de impacto JCR
2,134
Información de impacto
Datos JCR del año 2010
Volumen
DOI
Número de revista
538
Desde la página
34
Hasta la página
39
Mes
SIN MES
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Participantes
  • Autor: Cristobal Colon Hernandez (UPM)
  • Autor: Francisco Fernandez Martinez (UPM)
  • Autor: Jose Luis Montero De Juan (UPM)
  • Autor: Isabel Carrillo Ramiro (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Física Aplicada
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