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Growth of (Ba, Sr)TiO3 thin films by the hydrothermal-electrochemical method and effect of oxygen evolution on their microstructure

Published online by Cambridge University Press:  31 January 2011

Koji Kajiyoshi ,
Masahiro Yoshimura ,
Yukio Hamaji ,
Kunisaburo Tomono  and
Toru Kasanami
Koji Kajiyoshi*
Affiliation:
Development Group II, Research and Development Division, Murata Manufacturing Co., Ltd., 2-26-10, Tenjin, Nagaokakyo, Kyoto 617, Japan
Masahiro Yoshimura
Affiliation:
Research Laboratory of Engineering Materials, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama 226, Japan
Yukio Hamaji
Affiliation:
Development Group II, Research and Development Division, Murata Manufacturing Co., Ltd., 2–26–10, Tenjin, Nagaokakyo, Kyoto 617, Japan
Kunisaburo Tomono
Affiliation:
Development Group II, Research and Development Division, Murata Manufacturing Co., Ltd., 2–26–10, Tenjin, Nagaokakyo, Kyoto 617, Japan
Toru Kasanami
Affiliation:
Development Group II, Research and Development Division, Murata Manufacturing Co., Ltd., 2–26–10, Tenjin, Nagaokakyo, Kyoto 617, Japan
*
a) Author to whom correspondence should be addressed.
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Abstract

Thin films in the system BaTiO3–SrTiO3 have been grown on Ti electrodes with control of the Ba/Sr composition in aqueous solutions of (Ba, Sr) (OH)2 by the hydrothermal-electrochemical method. Barium contents of the solid-solution films were always lower than those of the synthesis solutions used. The BaTiO3 and the (Ba, Sr)TiO3 solid-solution films included “crater-shape” defects that resulted from the breakaway of the growing film, whereas no such defects were observed in the SrTiO3 film. This dependence of the defect generation on the film composition was interpreted to be caused by differences of anodically evolved oxygen gas pressure in “short-circuiting paths” that exists characteristically in the films grown by this method.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 1 , January 1996 , pp. 169 - 183
Copyright
Copyright © Materials Research Society 1996

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References

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