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Rietveld refinement of the crystal structure of γ-Mo4O11

Published online by Cambridge University Press:  10 January 2013

Hoong-Kun Fun*
Affiliation:
School of Physics, Universiti Sains Malaysia, USM 11800 Penang, Malaysia
Ping Yang
Affiliation:
School of Physics, Universiti Sains Malaysia, USM 11800 Penang, Malaysia
Minoru Sasaki
Affiliation:
Graduate School of Advanced Sciences of Matter, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima 739-8526, Japan
Masasi Inoue
Affiliation:
Graduate School of Advanced Sciences of Matter, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima 739-8526, Japan
Hideoki Kadomatsu
Affiliation:
Cryogenic Center, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima 739-8526, Japan
*
a)Corresponding author.

Abstract

The crystal structure of γ-Mo4O11 was obtained at room temperature (296 K) by Rietveld analysis with X-ray powder diffraction data. The crystal belongs to orthorhombic system, space group: Pna21, Z=4, Mr=559.753 (Atomic weights 1977), Dx=4.1228 g/cm3, F(000)=1024.0, μ=451.293 cm−1 (Int. Tab. Vol. C, Table 4.2.4.2, p. 193, λ=1.540 60 Å), a=24.4756(5) Å, b=6.7516(1) Å, c=5.4572(1) Å, and V=901.80(3) Å3. The structure was refined to Rwp=5.60%, Rp=4.27%, Rb=3.36%, and Rf=2.74% for 65 parameters with 3541 step intensities and 3055 peaks. Goodness of the fit S=3.35.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1999

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References

Gao, W. X., Sasaki, M., Negishi, H., Inoue, M., and Kulbachinskii, V. (1995). “Dynamic studies of transport properties of γ-Mo 4O 11 crystals using photoinduced transient thermoelectric effect under static electric field,” J. Phys. Soc. Jpn. 64, 518526.CrossRefGoogle Scholar
Gao, W. X., Sasaki, M., Negishi, H., Takase, K., and Inoue, M. (1996). “Oscillatory behavior of photogenerated carrier diffusion in γ-Mo 4O 11 under magnetic field,” J. Low Temp. Phys. 102, 487497.CrossRefGoogle Scholar
Inoue, M., Ohara, S., Horisaka, S., Koyano, M., and Negishi, H. (1988). “Transport properties of quasi-two-dimensional Mo 4O 11 crystals,” Phys. Status Solidi B 148, 659671.CrossRefGoogle Scholar
JCPDS (5-337). Powder Diffraction File, Set 5, published by the Joint Committee on Powder Diffraction Standards, 1845 Walnut Street, Philadelphia, PA 19103.Google Scholar
Kihlborg, L. (1959). “Studies on Molybdenum oxides,” Acta Chem. Scand. 13, 954962.CrossRefGoogle Scholar
Koyano, M., Ohara, S., Negishi, H., Sasaki, M., Inoue, M., Nomura, M., and Fujiwara, H. (1988). “Effect of pressure on electrical resistivity and crystal structure of quasi-two-dimensional Mo 4O 11,Phys. Status. Solidi B 147, 559565.CrossRefGoogle Scholar
Nardelli, M. (1983). “PARST: A system of Fortran routines for calculating molecular structure parameters from results of crystal structure analysis,” Comput. Chem. 7, 9598.CrossRefGoogle Scholar
Sakthivel, A., and Young, R. A. (1991). User's Guide to Programs DBWS-9006 and DBWS-9006PC for Rietveld Analysis of X-ray and Neutron Powder Diffraction Patterns, 17 September 1991, School of Physics, Georgia Institute of Technology, Atlanta, GA 30332.Google Scholar
Schneider, J. (1987). IUCr. Workshop on the Rietveld method, Patten.Google Scholar
Schneider, J. (1989). “Rietveld method runs on IMB-AT,” Acta Crystallogr., Sect. A: Found. Crystallogr. 43,Suppl. C,295295.CrossRefGoogle Scholar
Schlenker, C. (1989). Low-dimensional Electronic Properties of Molybdenum Bronzes and Oxides (Kluwer Academic, Dordrecht).CrossRefGoogle Scholar
Wyckoff, R. W. G. (1967). Crystal Structures (Interscience Publishers, New York), Vol. 2, pp. 84–85.Google Scholar
Yang, P., Fun, H. K., Rahman, I., and Saleh, M. (1995a). “Two phase refinements of the structures of α-Si 3N 4 and β-Si 3N 4 made from rice husk by Rietveld analysis,” Ceram. Int. 20, 137142.CrossRefGoogle Scholar
Yang, P., Sivakumar, K., Fun, H. K., Lee, T. J., Ku, H. C., and Lai, C. C. (1995b).Ab initio structure determination and Rietveld refinement of the crystal structure of (Pb 0.6Cu 0.4)Sr 2PrCu 2O 7−x,” Powder Diffr. 10, 154158.CrossRefGoogle Scholar