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Grain boundary structure in TiO2-excess barium titanate

Published online by Cambridge University Press:  31 January 2011

Takahisa Yamamoto
Affiliation:
Department of Materials Science, The University of Tokyo, 7–3-1 Hongo, Bukyo-ku, Tokyo 113, Japan
Yuichi Ikuhara
Affiliation:
Department of Materials Science, The University of Tokyo, 7–3-1 Hongo, Bukyo-ku, Tokyo 113, Japan
Katsuro Hayashi
Affiliation:
Department of Materials Science, The University of Tokyo, 7–3-1 Hongo, Bukyo-ku, Tokyo 113, Japan
Taketo Sakuma
Affiliation:
Department of Materials Science, The University of Tokyo, 7–3-1 Hongo, Bukyo-ku, Tokyo 113, Japan
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Extract

Grain boundary structure was examined in 0.1 mol% TiO2-excess BaTiO3 by high-resolution electron microscopy (HRTEM) and electron energy loss spectroscopy (EELS). Their grain boundaries were mostly faceted with {210} type habit. The faceted boundaries were characterized to be associated with an extra Ti–O2 bond with the rutile-like structure. The grain growth behavior in a small TiO2-excess BaTiO3 is discussed from the viewpoint of grain boundary structure.

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Copyright
Copyright © Materials Research Society 1998

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