TY - JOUR
T1 - Crystal chemistry, Rietveld refinements and Raman spectroscopy studies of the new solid solution series
T2 - Ba3-xSrx(VO4)2 (0 ≤ x ≤ 3)
AU - Azdouz, M.
AU - Manoun, Bouchaib
AU - Essehli, R.
AU - Azrour, M.
AU - Bih, L.
AU - Benmokhtar, S.
AU - Hou, A. Aït
AU - Lazor, P.
PY - 2010/5/21
Y1 - 2010/5/21
N2 - The new solid solution series Ba3-xSrx(VO4)2 (0 ≤ x ≤3) has been synthesized and studied by a combination of X-ray powder diffraction and Raman vibrational spectroscopy. This continuous solid solution crystallise in the hexagonal system with R over(3, ̄) m space group. The structure has been determined at room temperature from X-ray diffraction by the Rietveld method analysis. It is formed by a 3D network of (Ba/Sr)(1)(VO4)24- layers linked into a crystal network by (Ba/Sr)2+(2) cations. The vibrational spectra of this crystalline orthovanadate solid solution series are interpreted by means of factor group analysis in terms of space group R over(3, ̄) m (D3 d5). Assignments of the V-O vibrational stretching and bending modes, as well as some of the external modes, have been made. While all the modes show a monotonous shift as a function of the composition x, a break in the curves of intensities, full width at half maximum and band areas as a function of x is observed and attributed to the statistical distribution of Ba and Sr ions in the same crystallographic sites.
AB - The new solid solution series Ba3-xSrx(VO4)2 (0 ≤ x ≤3) has been synthesized and studied by a combination of X-ray powder diffraction and Raman vibrational spectroscopy. This continuous solid solution crystallise in the hexagonal system with R over(3, ̄) m space group. The structure has been determined at room temperature from X-ray diffraction by the Rietveld method analysis. It is formed by a 3D network of (Ba/Sr)(1)(VO4)24- layers linked into a crystal network by (Ba/Sr)2+(2) cations. The vibrational spectra of this crystalline orthovanadate solid solution series are interpreted by means of factor group analysis in terms of space group R over(3, ̄) m (D3 d5). Assignments of the V-O vibrational stretching and bending modes, as well as some of the external modes, have been made. While all the modes show a monotonous shift as a function of the composition x, a break in the curves of intensities, full width at half maximum and band areas as a function of x is observed and attributed to the statistical distribution of Ba and Sr ions in the same crystallographic sites.
KW - BaSr(VO)
KW - Orthovanadates
KW - Raman spectroscopy
KW - Rietveld refinements
KW - X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=77952320097&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2010.03.066
DO - 10.1016/j.jallcom.2010.03.066
M3 - Article
AN - SCOPUS:77952320097
SN - 0925-8388
VL - 498
SP - 42
EP - 51
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
IS - 1
ER -