Characterization of Potassium Niobate Produced by Self-Assembled Nanosheet from Aqueous Solution

Submicron particles of KNbO3 were prepared by a colloid chemistry method. A rock-salt-type KF block in a layered perovskite, K2NbO3F, with a K2NiF4 type structure was selectively dissolved in water to produce perovskite nanosheets at RT. The self-assembly between perovskite nanosheets in a colloidal...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2002-11, Vol.41 (Part 1, No. 11B), p.7021-7024
Main Authors: Toda, Kenji, Ohtake, Naotaka, Kawakami, Masato, Tokuoka, Saori, Uematsu, Kazuyoshi, Sato, Mineo
Format: Article
Language:English
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Summary:Submicron particles of KNbO3 were prepared by a colloid chemistry method. A rock-salt-type KF block in a layered perovskite, K2NbO3F, with a K2NiF4 type structure was selectively dissolved in water to produce perovskite nanosheets at RT. The self-assembly between perovskite nanosheets in a colloidal solution may enable shape control of KNbO3 powder. The microstructure, phase transition and mechanism of the solution process were investigated by TEM, XRD and determination of uv-visible absorption spectra. 14 refs.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.41.7021