作者: Toshihiro Ifuku , Tatsuo Furuta , Tetsuro Fukui , Makoto Kubota , Kenichi Takeda
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摘要: A piezoelectric ceramic that includes barium titanate and 0.04 mass % or more 0.20 less manganese relative to titanate. The is composed of crystal grains. grains include having an equivalent circular diameter 30 μm 300 B 0.5 3 less. the individually form aggregates a sea-island structure.