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Low temperature/low pressure hydrothermal synthesis of barium titanate: Powder and heteroepitaxial thin films

Published online by Cambridge University Press:  03 March 2011

A.T. Chien
Affiliation:
Materials Research Laboratory and Materials Department, University of California, Santa Barbara Santa Barbara. California 93106
J.S. Speck
Affiliation:
Materials Research Laboratory and Materials Department, University of California, Santa Barbara Santa Barbara. California 93106
F.F. Lange
Affiliation:
Materials Research Laboratory and Materials Department, University of California, Santa Barbara Santa Barbara. California 93106
A.C. Daykm
Affiliation:
Materials Research Laboratory and Materials Department, University of California, Santa Barbara Santa Barbara. California 93106
C.G. Levi
Affiliation:
Materials Research Laboratory and Materials Department, University of California, Santa Barbara Santa Barbara. California 93106
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Abstract

Barium titanate powder and heteroepitaxial thin films were successfully produced by hydrothermal routes at ambient pressure and temperatures less than 100 °C. This processing method provides a simple low temperature route for producing epitaxied barium titanate thin films on single-crystal SrTiO3 substrates and powders which could also be extended to other systems. A dissolution/reprecipitation growth mechanism also was proposed for the formation of barium titanate by this route using previously published aqueous stability diagrams. Repeated hydrothermal treatments improved film thickness and surface coverage at the expense of increased surface roughness.

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Articles
Copyright
Copyright © Materials Research Society 1995

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