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Nanocrystalline BaTiO3 from the Gas-Condensation Process

Published online by Cambridge University Press:  10 February 2011

Shaoping Li ,
J. A. Eastman ,
L. J. Thompson ,
Carl. Bjormander  and
C. M. Foster
Shaoping Li
Affiliation:
Materials Science division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne IL 60439
J. A. Eastman
Affiliation:
Materials Science division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne IL 60439
L. J. Thompson
Affiliation:
Materials Science division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne IL 60439
Carl. Bjormander
Affiliation:
Materials Science division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne IL 60439
C. M. Foster
Affiliation:
Materials Science division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne IL 60439
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Abstract

Nanocrystalline BaTiO3 can be prepared by the gas condensation method at a temperature as low as 700°C, with an average particle size as small as 18nm. The stoichiometry of nanocrystalline BaTiO3 particles can be controlled precisely and reproducibly. Nanocrystalline BaTiO3 powders, fabricated by a novel e-beam evaporation method, show good sintering behavior with a high density at a temperature as low as 1200°C. These samples exhibit a relatively larger dielectric constant than that of coarse-grained BaTiO3. In addition, a thermal analysis has been also carried out to determinethe lowest temperature for forming nanostructured BaTiO3 from Ba/Ti oxidized clusters at ambient pressure.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 457: Symposium V – Nanophase and Nanocomposite Materials II , 1996 , 45
Copyright
Copyright © Materials Research Society 1997

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References

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