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Long-Range Lattice Matching between (100)/(010) Bismuth-Layered Perovskite Structure and (101) Rutile Structure

Published online by Cambridge University Press:  11 February 2011

Takayuki Watanabe ,
Keisuke Saito ,
Minoru Osada ,
Toshimasa Suzuki ,
Masayuki Fujimoto ,
Mamoru Yoshimoto ,
Atsushi Sasaki ,
Jin Liu ,
Masato Kakihana  and
Hiroshi Funakubo
Takayuki Watanabe
Affiliation:
Department of Innovative and Engineered Materials, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226–8502, Japan
Keisuke Saito
Affiliation:
Application Laboratory, XRD Section, Analytical Department, PANalytical Japan, 35–1 Sagamiono 7-chome, Sagamihara-shi, Kanagawa 228–0803, Japan
Minoru Osada
Affiliation:
PRESTO, Japan Science and Technology Corporation (JST), 4259 Nagatsuta, Midori-ku, Yokohama 226–8503, Japan
Toshimasa Suzuki
Affiliation:
Physical Properties Evaluation Center, Central R&D Laboratories, TAIYO YUDEN Co., Ltd., 5607–2 Nakamuroda, Haruna-machi, Gunma 370–3347, Japan
Masayuki Fujimoto
Affiliation:
Physical Properties Evaluation Center, Central R&D Laboratories, TAIYO YUDEN Co., Ltd., 5607–2 Nakamuroda, Haruna-machi, Gunma 370–3347, Japan
Mamoru Yoshimoto
Affiliation:
Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226–8503, Japan
Atsushi Sasaki
Affiliation:
Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226–8503, Japan
Jin Liu
Affiliation:
Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226–8503, Japan
Masato Kakihana
Affiliation:
Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226–8503, Japan
Hiroshi Funakubo
Affiliation:
Department of Innovative and Engineered Materials, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226–8502, Japan
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Abstract

a-/b-axis-oriented epitaxial bismuth layer-structured ferroelectric thin films were epitaxially grown on (101)-oriented oxide with rutile structure. The long-range lattice matching between the ferroelectric layer and the bottom rutile layer, particularly the number of rutile units facing one ferroelectric unit and the surface orientation, were discussed for (100)(010)Bi4Ti3O12//(101)TiO2 structure. Cross sectional transmission electron microscope analysis suggests that seven rutile units lie under one a-/b-axis-oriented Bi4Ti3O12 unit with lower misfit dislocation density comparing to eight rutile units by one Bi4Ti3O12 model. Based on this result, the surface orientation at the interface was simulated to give us an appropriate ion alignment model. The titanium layer in the (101)TiO2 structure is most likely to match with the oxygen layer in the a-/b-axis-oriented Bi4Ti3O12 film.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 748: Symposium U – Ferroelectric Thin Films XI , 2002 , U2.4
Copyright
Copyright © Materials Research Society 2003

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References

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