Long-range ferroelectric interactions in KTaO3/KNbO3 superlattice structures

Symmetric superlattice structures consisting of alternating atomic-scale layers of KTaO3 and KNbO3 with variable periodicity were grown on KTaO3 substrates by pulsed laser deposition. The in-plane structure of KNbO3 closely matches that of the KTaO3 substrate, resulting in KTaO3/KNbO3 heterostructur...

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Bibliographic Details
Published in:Applied physics letters 1998-05, Vol.72 (20), p.2535-2537
Main Authors: Christen, H.-M., Specht, E. D., Norton, D. P., Chisholm, M. F., Boatner, L. A.
Format: Article
Language:English
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Summary:Symmetric superlattice structures consisting of alternating atomic-scale layers of KTaO3 and KNbO3 with variable periodicity were grown on KTaO3 substrates by pulsed laser deposition. The in-plane structure of KNbO3 closely matches that of the KTaO3 substrate, resulting in KTaO3/KNbO3 heterostructures that are uniformly strained in-plane without misfit dislocations. This strain imposes an in-plane KNbO3 lattice spacing identical to that of the KTaO3 substrate for the temperature range 30 °C
ISSN:0003-6951
1077-3118
DOI:10.1063/1.121411