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Crystal Structural and Raman Vibrational Studies of Bi1-xSb1-xTe2xO4 Solid Solution with 0 ≤ x ≤ 0.1

DOI: 10.4236/oalib.1101180, PP. 1-10

Subject Areas: Composite Material, Analytical Chemistry

Keywords: BiSbO4, TeO2, Crystal Structure, Spectroscopy Raman

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Abstract

Synthesis and crystal structures are described for the Bi1-xSb1-xTe2xO4 solid solution with 0 ≤ x ≤ 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(2)(4c), Sb/Te(1)(4d). The oxygen occupied two sites, 8f and 8b, respectively. The reliability factors are: Rp = 7.45%, Rwp = 10.6% and Rb = 3.88% for x = 0.1. The structure contains [(Sb/Te(1))O4]n layers formed by (Sb/Te(1))O6 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-Bi3 -O, O-Sb5 -O and connects (Bi/Te(2))O8-(Sb/Te(1))O6 vibration in the crystal.

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Loubbidi, L. , Chagraoui, A. , Yakine, I. , Orayech, B. , Naji, M. , Igartua, J. M. and Tairi, A. (2014). Crystal Structural and Raman Vibrational Studies of Bi1-xSb1-xTe2xO4 Solid Solution with 0 ≤ x ≤ 0.1. Open Access Library Journal, 1, e1180. doi: http://dx.doi.org/10.4236/oalib.1101180.

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