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Crystal structure refinement of the ferroelectric ceramic compound Sm2Bi2Ti3O12

  • M. E. Villafuerte-Castrejón (a1), O. Alvarez-Fregoso (a1), L. E. Sansores (a1), A. Sànchez-Arjona (a1), J. Duque (a2) and R. Pomés (a2)...
Abstract

Sm2Bi2Ti3O12 was synthesized by solid state reaction from Sm2O3, Bi2O3, and TiO2 in molar relation 1:1:3. Title compound is isostructural with Bi4Ti3O12. Products of the reaction were analyzed by X-ray diffraction methods. The crystal structure was refinement by the Rietveld Method. Cell parameters are: a=5.368(2), b=5.369(2), and c=32.71(2) Å, space group Fmmm. The final R value was 9.96% (Rw=13.43%).© 1998 International Center for Diffraction Data.

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References
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Alvarez-Fregoso, O. (1997). “Structural and dielectric characterization of Sm 2Bi 2Ti 3O 12 ferroelectric ceramics,” J. Appl. Phys. 83, 13871391.
Aurivillius, B.(1950). “Mixed bismuth oxides with layer lattices II. Structure of Bi 4Ti 3O 12,” Ark. Kem. Bd 1 nr 58.
Diffract/AT Version-3.2 (1993). By Socabin-Siemens.
Newnham, R. E., Wolfe, R. W., and Dorrian, J. F. (1971). “Structural basis of ferroelectricity in the bismuth titanate family,” Mater. Res. Bull. 6, 10291040.
Rae, D., Thompson, G., Withers, R., and Willis, A. (1990). “Structure refinement of commensurately modulated bismuth titanate, Bi 4Ti 3O 12,Acta Crystallogr. Sec. B: Struct. Sci. 46, 474487.
Sakthivel, A., and Young, R. (1992). “DBWS-9006PC/Program for Rietveld Analysis of X-ray and Neutron Powder Diffraction Patterns,” School of Physics, Georgia Institute of Technology.
Werner, P., Eriksson, L., and Westdahl, M. (1985). “Powder indexing program for all symmetries,” J. Appl. Crystallogr. 18, 367370.
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Powder Diffraction
  • ISSN: 0885-7156
  • EISSN: 1945-7413
  • URL: /core/journals/powder-diffraction
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