Synthesis of Platelike {100} SrTiO3 Particles by Topochemical Microcrystal Conversion and Fabrication of Grain-Oriented Ceramics

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概要

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• Platelike SrTiO3 particles with a cubic perovskite structure were synthesized by topochemical microcrystal conversion (TMC) from platelike precursor particles of layer-structured SrBi4Ti4O15 at 950 °C. SrTiO3 particles preserved the shape of precursor particles, and had a thickness of approximately 0.5 μm and a width of 5–10 μm. X-ray diffraction analysis revealed that in the TMC reaction, the crystallographic {001} plane of SrBi4Ti4O15 is converted into the {100} plane of SrTiO3. Using the platelike SrTiO3 particles as a template in templated grain growth method, dense {100} grain-oriented SrTiO3 ceramics having a {100} orientation degree (Lotgering's factor) higher than 91% could be fabricated at sintering temperatures between 1350 and 1550 °C. The maximum orientation factor reached 99.3%.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2006-09-30

著者

• SAITO Yasuyoshi

  Toyota Central R&D Labs., Inc.

• Takao Hisaaki

  Toyota Central R&d Labs. Inc.

• Saito Yasuyoshi

  Toyota Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan

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