Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
FT-Raman and FT-IR vibrational spectroscopic studies of Sr2RESbO6 (RE = La to Lu and Y) double perovskites
Year:2012
Research Areas
  • Physics - Structure of materials
Information
Abstract
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.
International
Si
JCR
Si
Title
Journal of Alloys And Compounds
ISBN
0925-8388
Impact factor JCR
2,134
Impact info
Datos JCR del año 2010
Volume
Journal number
538
From page
34
To page
39
Month
SIN MES
Ranking
Participants
  • Autor: Cristobal Colon Hernandez (UPM)
  • Autor: Francisco Fernandez Martinez (UPM)
  • Autor: Jose Luis Montero De Juan (UPM)
  • Autor: Isabel Carrillo Ramiro (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Física Aplicada
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)