JRIFI, A.; EL JAZOULI, Abdelaziz; CHAMINADE, Jean-Pierre; COUZI, Michel

doi:10.1154/1.3187160

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JRIFI, A.
Laboratoire de Chimie des Matériaux Solides

EL JAZOULI, Abdelaziz
Laboratoire de Chimie des Matériaux Solides

CHAMINADE, Jean-Pierre
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Powder Diffraction. 2009, vol. 24, n° 3, p. 200-204

Cambridge University Press (CUP)

Résumé en anglais

Sr0.5Zr2(AsO4)3 arsenate was prepared and structurally characterized by powder X-ray diffraction and by Raman and infrared spectroscopies. Its structure, which belongs to the Nasicon-type family, was refined by the Rietveld method in the R-3 space group, from X-ray powder diffraction data. The hexagonal unit-cell parameters were determined to be ah=8.965(2) Å, ch=23.955(6) Å, V=1667.43(6) Å3, and Z=6. The structure is formed by an ionic three-dimensional network of AsO4 tetrahedra and ZrO6 octahedra linked by corners with Sr2+ ions occupying half of the M1 sites in an ordered manner. Raman and infrared spectra were recorded and assignments of the stretching and bending vibrations of the AsO 3/4- tetrahedra were made. The number of the peaks observed is in good agreement with that predicted by the factor-group analysis of the R-3 space group.< Réduire

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Crystal structure

Infrared spectra

Powder technology

Raman spectra

Space groups

Strontium compounds

Vibrational modes

X-ray diffraction

Zirconium compounds

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Synthesis, crystal structure and vibrational spectra of Sr<sub>0.5</sub>Zr<sub>2</sub>(AsO<sub>4</sub>)<sub>3</sub>

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