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Sol-Gel Derived Barium Sodium Niobate and Bismuth Titanate Films

Published online by Cambridge University Press:  25 February 2011

J.M. Boulton ,
G. Teowee ,
W.M. Bomnersbach  and
D.R. Uhlmann
J.M. Boulton
Affiliation:
Department of Materials Science and Engineering, University of Arizona, Tucson, AZ 85721
G. Teowee
Affiliation:
Department of Materials Science and Engineering, University of Arizona, Tucson, AZ 85721
W.M. Bomnersbach
Affiliation:
Department of Materials Science and Engineering, University of Arizona, Tucson, AZ 85721
D.R. Uhlmann
Affiliation:
Department of Materials Science and Engineering, University of Arizona, Tucson, AZ 85721
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Abstract

Sol-gel derived barium sodium niobate and bismuth titanate films were successfully prepared from precursor solutions of chelated Ba[Nb(OEt)6]2 and NaNb(OEt)6 and from bismuth 2-ethyl hexanoate and Ti(OEt)4 respectively. Single phase Ba2NaNb5O15 was formed at 750C on platinized Si and at 850C on fused SiO2. Monoclinic (pseudo-orthorhombic) Bi4Ti3O12 was formed at temperatures as low as 500C. Both film compositions showed significant second harmonic generation. The dielectric constant of the bismuth titanate film was comparable to that of sputtered films.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 243: Symposium G – Ferroelectric Thin Films II , 1991 , 303
Copyright
Copyright © Materials Research Society 1992

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