Room temperature synthesis and characterization of perovskite compounds

A new soft chemical method has been developed to remove the rock-salt type layers in the Ruddlesden–Popper-type layered perovskite at room temperature. The rock-salt type (KF) blocks in the layered perovskite, K 2NbO 3F, were selectively dissolved into water to give three-dimensional perovskite, KNb...

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Bibliographic Details
Published inSolid state ionics Vol. 154; pp. 393 - 398
Main Authors Toda, Kenji, Tokuoka, Saori, Uematsu, Kazuyoshi, Sato, Mineo
Format Journal Article
LanguageEnglish
Published Elsevier B.V 02.12.2002
Subjects
Cubic perovskite
Layered perovskite
Niobate
Soft chemistry
Topotactic reaction
Topotactic reaction
Niobate
Layered perovskite
Cubic perovskite
Soft chemistry
81.30.-t Phase diagrams and microstructures developed by solidification and solid–solid phase transformations
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Summary:A new soft chemical method has been developed to remove the rock-salt type layers in the Ruddlesden–Popper-type layered perovskite at room temperature. The rock-salt type (KF) blocks in the layered perovskite, K 2NbO 3F, were selectively dissolved into water to give three-dimensional perovskite, KNbO 3, at room temperature. In the alkali metal aqueous solution, the ion-exchange reaction of parent layered compound with coexisting ions in the alkaline solution results in the new perovskites containing the other metal ions for the A-site. The development of this synthetic route could lead to interesting new metastable perovskite materials at low temperature.
ISSN:0167-2738
1872-7689
DOI:10.1016/S0167-2738(02)00578-7