Microstructure and Dielectric Constant of BaTiO3 Synthesized by Roller Quenching
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概要
- 論文の詳細を見る
BaTiO3 samples were aerodynamically levitated and laser melted under containerless conditions and quenched with a twin-roller apparatus. The microstructure of the BaTiO3 samples became more refined with increasing undercooling level prior to quenching. A two-phase microstructure consisting of perovskite BaTiO3 and hexagonal BaTiO3 was observed in the samples. The dielectric constant of the samples decreased due to the presence of hexagonal BaTiO3. The formation of the two-phase microstructure was explained by a significant release of crystallization heat during rapid solidification. Roller-quenching experiments also revealed that BaTiO3 is not easily formed into glass.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-12-15
著者
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Ishikawa Takehiko
Japan Aerospace Exploration Agency
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PARADIS Paul-FRANCOIS
Japan Aerospace Exploration Agency
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YU Jianding
Japan Aerospace Exploration Agency, Tsukuba Space Center
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Yoda Shinichi
Japan Aerospace Exploration Agency
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Paradis Paul-François
Japan Aerospace Exploration Agency, Tsukuba Space Center, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan
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Yoda Shinichi
Japan Aerospace Exploration Agency, Tsukuba Space Center, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan
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Ishikawa Takehiko
Japan Aerospace Exploration Agency, Tsukuba Space Center, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan
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Yu Jianding
Japan Aerospace Exploration Agency, Tsukuba Space Center, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan
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