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Grain‐Oriented Bi 4 Ti 3 O 12 Ferroelectric Ceramics Prepared by Magnetic Alignment
Author(s) -
Chen Weiwu,
Kinemuchi Yoshiaki,
Watari Koji,
Tamura Takuya,
Miwa Kenji
Publication year - 2006
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00772.x
Subject(s) - materials science , ceramic , ferroelectricity , dielectric , sintering , ferroelectric ceramics , pressureless sintering , composite material , grain size , green body , optoelectronics
Grain‐oriented ferroelectric ceramics are desirable for many applications, but developing a mass‐production method for such kinds of ceramics remains a significant challenge. In the current study, we report a convenient approach combining magnetic alignment and gelcasting to prepare grain‐oriented ceramics without applied pressure and templates. This method was found to be effective to prepare highly a–b plane‐oriented Bi 4 Ti 3 O 12 ferroelectric ceramics and subsequently enhance the dielectric properties. We used the conventional ceramic process, i.e., solid‐state synthesis, gelcasting forming technique, and pressureless sintering except for the application of a 10 T magnetic field. Indeed, such an approach should facilitate the mass production of large and dense grain‐oriented ceramic materials.