Direct synthesis of platelet KNbO3 particles using KNb3O8 precursor and KNO3 self-flux
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概要
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Platelet KNbO3 particles having perovskite single phase have been successfully synthesized by a new simple procedure based on the dry-mixing technique and self-flux method using KNO3 source that required no washing and filtration process. Well-crystalline edge-shaped platelet KNb3O8 particles were first obtained by the reaction between KNO3 and Nb2O5. Next, they were reacted with second KNO3 to form platelet KNbO3 particles by the topochemical conversion method. The platelet KNbO3 particles synthesized at 800°C demonstrated a relatively high aspect ratio of around 5 with edge lengths of about 2–10 and 10–40 µm in size for the tabular and thickness directions, respectively. The topochemical conversion mechanism from KNb3O8 to KNbO3 was also proposed in this study.
著者
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Kagomiya Isao
Department Of Applied Physics School Of Science And Engineering Waseda University:(present Address)m
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Kakimoto Ken-ichi
Department Of Material Science And Engineering Faculty Of Engineering Nagoya Institute Of Technology
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SUGIYAMA Keisuke
Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of
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KAKIMOTO Ken-ichi
Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
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KAGOMIYA Isao
Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
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SUGIYAMA Keisuke
Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
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