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Synthesis of Several Tungsten (VI) Complex Perovskites, Ba(BIII2/3W1/3)O3 (B = In, Y, Dy, Gd, Sm) by the Polymeric Precursors Method

Published online by Cambridge University Press:  11 February 2011

Antonio F. Fuentes ,
Guillermo Mendoza-Suarez ,
J. Iván Escalante-García ,
Ulises Amador  and
Khalid Boulahya
Antonio F. Fuentes
Affiliation:
CINVESTAV-IPN Unidad Saltillo, Apartado Postal 663, 25000 Saltillo, Coahuila, Mexico.
Guillermo Mendoza-Suarez
Affiliation:
CINVESTAV-IPN Unidad Saltillo, Apartado Postal 663, 25000 Saltillo, Coahuila, Mexico.
J. Iván Escalante-García
Affiliation:
CINVESTAV-IPN Unidad Saltillo, Apartado Postal 663, 25000 Saltillo, Coahuila, Mexico.
Ulises Amador
Affiliation:
Departamento de CC. Químicas, Facultad de Ciencias Experimentales y de la Salud, Universidad San Pablo-CEU, Urbanización Montepríncipe, 28668-Boadilla del Monte, Madrid, Spain.
Khalid Boulahya
Affiliation:
Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense, 28040-Madrid, Spain
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Abstract

We show in this work the usefulness of the polymeric precursors method to obtain several Ba(BIII2/3W1/3)O3 (B = In, Y, Dy, Gd, Sm) complex perovskites. Solid resins obtained from solution were treated at different temperatures and characterized by XRD and thermal analysis. BaCO3 and Ba(NO3)2 were the only crystalline species found below 500°C. Tungstates with different stoichiometry evolve from the powdered precursors as the temperature is raised. Formation of perovskite-like phases is evident in all five cases, above 1000°C. XRD results suggest also that trivalent ions do not participate in chemical reactions below that temperature since the presence of any binary phase containing them could be confirmed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 755: Symposium DD – Solid-State Chemistry of Inorganic Materials IV , 2002 , DD6.13
Copyright
Copyright © Materials Research Society 2003

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References

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