%0 Journal Article
%T Crystal Structural and Raman Vibrational Studies of Bi<sub>1-x</sub>Sb<sub>1-x</sub>Te<sub>2x</sub>O<sub>4</sub> Solid Solution with 0 ¡Ü x ¡Ü 0.1
%A Leila Loubbidi
%A Abdeslam Chagraoui
%A Imane Yakine
%A Brahim Orayech
%A Mohamed Naji
%A Josu M. Igartua
%A Abdelmjid Tairi
%J Open Access Library Journal
%V 1
%N 9
%P 1-10
%@ 2333-9721
%D 2014
%I Open Access Library
%R 10.4236/oalib.1101180
%X Synthesis and crystal structures are described for the Bi<sub>1-x</sub>Sb<sub>1-x</sub>Te<sub>2x</sub>O<sub>4</sub> solid solution with 0 ¡Ü x ¡Ü 0.1. It crystallizes in the monoclinic system,
space group I2/c. Rietveld refinements of
X-ray powder diffraction data indicate that the atomic positions are: Bi/Te<sup>(2)</sup>(4c),
Sb/Te<sup>(1)</sup>(4d). The oxygen occupied two sites, 8f and 8b,
respectively. The reliability factors are: R<sub>p</sub> = 7.45%, R<sub>wp</sub> = 10.6% and R<sub>b</sub> = 3.88% for x = 0.1. The
structure contains [(Sb/Te<sup>(1)</sup>)O<sub>4</sub>]<sub>n</sub> layers formed by (Sb/Te<sup>(1)</sup>)O<sub>6</sub> octahedra sharing
corners, which are parallel to (001) plan and held together by bismuth and tellurium
atoms. The Raman study of this solid solution shows the bands which are assigned
to O-Bi<sup>3 </sup>-O, O-Sb<sup>5 </sup>-O and connects (Bi/Te<sup>(2)</sup>)O<sub>8</sub>-(Sb/Te<sup>(1)</sup>)O<sub>6</sub> vibration
in the crystal.
%K BiSbO<sub>4</sub>
%K TeO<sub>2</sub>
%K Crystal Structure
%K Spectroscopy Raman
%U http://www.oalib.com/paper/3130974