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Preparation of BaTiO3 and PbTiO3 thin Films on BaPb3 Substrates by the SOL-GEL Method and Their Properties

Published online by Cambridge University Press:  25 February 2011

M. KuWabAra ,
T. Kuroda ,
S. Takahashi  and
T. Azuma
M. KuWabAra
Affiliation:
Kyushu Institute of Technology, Department of Applied Chemistry, Tobata, Kitakyushu 804, Japan
T. Kuroda
Affiliation:
Kyushu Institute of Technology, Department of Applied Chemistry, Tobata, Kitakyushu 804, Japan
S. Takahashi
Affiliation:
Kyushu Institute of Technology, Department of Applied Chemistry, Tobata, Kitakyushu 804, Japan
T. Azuma
Affiliation:
Kyushu Institute of Technology, Department of Applied Chemistry, Tobata, Kitakyushu 804, Japan
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Abstract

Barium titanate, lead titanate and barium-lead titanate thin films were prepared by the sol-gel method using metal alkoxides on metallic conducting BaPbO3 ceramic substrates. Thin films were deposited on the polished surfaces of the substrates by spin coating solutions containing Ba(OC2H4OCH3)2, Pb(OCOCH3)2 and Ti(O-iC3H7)4 and methoxyethanol. The gel films were then fired at appropriate temperatures to yield ceramic thin films. A 0.50 µm-thick BaTio3 film showed a dielectric constant of 280 and tan ° of 3% at 1kHz with no distinguishable peak of dielectric constant at any temperature between 20°C and 200°C. Both PbTiO3 (0.75 µm thick) and Ba0.7Pb0.3 (0.2 µm thick) films, on the other hand, showed a distinguishable peak of dielectric constant at their Curie point with a rather deformed P-E hysteresis loop at room temperature.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 271: Symposium N – Better Ceramics Through Chemistry V , 1992 , 365
Copyright
Copyright © Materials Research Society 1992

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References

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