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Growth and structure of heteroepitaxial lead titanate thin films constrained by miscut strontium titanate substrates

Published online by Cambridge University Press:  01 May 2006

Yoko Ichikawa ,
Toshiyuki Matsunaga ,
Mohsen Hassan ,
Isaku Kanno ,
Takaaki Suzuki  and
Kiyotaka Wasa
Yoko Ichikawa
Affiliation:
Research Institute of Innovative Technology for the Earth (RITE), Kizugawadai, Kyoto 619-0292, Japan
Toshiyuki Matsunaga
Affiliation:
Matsushita Techno-Research, Moriguchi, Osaka 570-0005, Japan
Mohsen Hassan
Affiliation:
Department of Mechanical Engineering, Kyoto University, Kyoto 606-8501, Japan
Isaku Kanno
Affiliation:
Department of Mechanical Engineering, Kyoto University, Kyoto 606-8501, Japan
Takaaki Suzuki
Affiliation:
Department of Mechanical Engineering, Kyoto University, Kyoto 606-8501, Japan
Kiyotaka Wasa*
Affiliation:
Faculty of Science, Yokohama City University, Yokohama 236-0027, Japan
*
b) Address all correspondence to this author. e-mail: kiyotkw@hi-ho.ne.jp
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Abstract

Single-crystal lead titanate [(001)PbTiO3 (PT)] thin films were heteroepitaxially grown on a miscut strontium titanate [(001)SrTiO3 (ST)] substrate by radio frequency magnetron sputtering. The PT thin films were grown via a step-flow growth. The step-flow growth enhanced the layer growth resulting in the continuous (001) single-crystal structure without a dislocated interface for the film thickness below 200 to 250 nm. The PT thin films show a small temperature variation of the lattice parameters unlikely to the bulk PT crystals due to the substrate clamping. The temperature variation of the lattice constants is discussed in terms of the thermo-elastic deformation analysis for the PT/ST heterostructure.

Keywords

FilmFerroelectricThermal Stresses
Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 5 , May 2006 , pp. 1261 - 1268
Copyright
Copyright © Materials Research Society 2006

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