Crystallographic Texture Development in Bismuth Sodium Titanate Prepared by Reactive-Templated Grain Growth Method |
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Authors: | Toshio Kimura Toru Takahashi Toshihiko Tani Yasuyoshi Saito |
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Affiliation: | Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan;Toyota Central Research and Development Laboratories, Inc., Nagakute 480-1192, Japan |
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Abstract: | Bi0.5Na0.5TiO3 (BNT) and 0.94Bi0.5Na0.5TiO3·0.06BaTiO3 (BNT–BT) bulk ceramics with extensive 〈100〉 texture were prepared by the reactive-templated grain growth method, using platelike Bi4Ti3O12 (BIT) particles as templates for BNT. Calcined compacts were composed of matrix grains with random orientation and 〈100〉-oriented grains transformed from aligned BIT particles, and the texture developed by the growth of oriented grains during sintering. Ceramics with extensive texture were obtained by using the starting mixture containing the maximum concentration of platelike BIT to form the maximum volume fraction of oriented grains. |
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Keywords: | crystals/crystallization bismuth titanates grain growth |
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