ジルコニウムアルコキシドを用いたZrO_2-コーティングBaTiO_3複合粒子の合成と評価(<特集>セラミック材料)
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概要
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Chemical processing of ZrO_2-coated BaTiO_3 composites was investigated with the surface modification through the hydrolysis of zirconium alkoxide on the surfaces of BaTiO_3 particles. It was clarified from the BET measurement and the SEM observation that original BaTiO_3 particles were homogeneously coated with zirconium hydroxide fine particles. 2mass%ZrO_2-coated BaTiO_3 (BT-05) bodies sintered at 1275℃ exhibited a flattened dielectric temperature dependence (dielectric constants of 3600 to 4700) with lower loss (tanδof<5% in the temperature range of -30 to 110℃), indicating a relaxor characteristics. The microstructure of ZrO_2-added BaTiO_3 (BT-05) sintered bodies consisted of grains of several 0.9μm which are much smaller than ones of non-added BaTiO_3 sintered bodies, suggesting that the grain growth of BaTiO_3 was suppressed by zirconia existing at the grain boundaries.
- 2001-06-15
著者
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林 卓
Department Of Materials Science Shonan Institute Of Technology
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林 卓
湘南工科大
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谷村 明宏
湘南工科大学材料工学科
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篠崎 裕志
湘南工科大学材料工学科
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高梨 一也
湘南工科大学材料工学科
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青木 秀行
湘南工科大学材料工学科
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佐々木 [キョウ]一
湘南工科大学材料工学科
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Hayashi T
Research Laboratory Oki Electric Industry Co. Ltd.
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Hayashi T
Nisshin Electric Co.
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Hayashi Tsukasa
R D Division Nissin Electric Co. Ltd.
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Hayashi Takahisa
Vlsi Research & Development Center Oki Electric Industry Co Ltd.
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Hayashi Takafumi
Department Of Applied Physics Faculty Of Engineering The University Of Tokyo
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Hayashi Toshiyuki
Department Of Mechanical Engineering Nagoya University
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Hayashi Takayoshi
Advanced Research Institute For Science And Engineering Waseda University
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Hayashi Takayoshi
Musashino Electrical Communication Laboratory Nippon Telegraph And Telephone Public Corporation
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林 卓
マテリアル工学科
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佐々木 一
湘南工科大学材料工学科
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HAYASHI Teru
Research Laboratory of Precision Machinery and Electronics,Tokyo Institute of Technology
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