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The structure of thin films sputter deposited from a Ba2 Si2TiO8 ceramic target

Published online by Cambridge University Press:  31 January 2011

H. Yamauchi ,
R. J. White ,
M. Ayukawa ,
T. C. Murray  and
J. W. Robinson
H. Yamauchi
Affiliation:
Department of Engineering Materials, University of Windsor, Windsor, Ontario, Canda N9B 3P4
R. J. White
Affiliation:
Department of Engineering Materials, University of Windsor, Windsor, Ontario, Canda N9B 3P4
M. Ayukawa
Affiliation:
Department of Engineering Materials, University of Windsor, Windsor, Ontario, Canda N9B 3P4
T. C. Murray
Affiliation:
Department of Engineering Materials, University of Windsor, Windsor, Ontario, Canda N9B 3P4
J. W. Robinson
Affiliation:
Department of Engineering Materials, University of Windsor, Windsor, Ontario, Canda N9B 3P4
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Abstract

Thin films were sputter deposited from a Fresnoite (Ba2Si2TiO8) ceramic target at substrate temperatures lower than 175°C. The as-deposited thin films were near amorphous with a void network morphology. In spite of the fact that the film compositions were shifted from stoichiometry, x-ray diffraction studies showed that the films crystallized to form randomly oriented Fresnoite grains. The crystallization kinetics were quite sluggish and the resultant activation energy for the crystallization process was 370 ± 30 kJ/mol. Even after annealing for 10 h at 750°C an appreciable amount of amorphous material remained in the thin films. The short-range order in this amorphous material was changed from that of the as-deposited thin films. The overall devitrification kinetics of amorphous Fresnoite thin films at a fixed temperature were represented theoretically by an equation of Tool's type.

Type
Articles
Information
Journal of Materials Research , Volume 3 , Issue 1 , February 1988 , pp. 105 - 111
Copyright
Copyright © Materials Research Society 1988

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References

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