The growth and properties of epitaxial KNbO{sub 3} thin films and KNbO{sub 3}/KTaO{sub 3} superlattices

Journal Article · Fri Mar 01 04:00:00 EST 1996 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.116263· OSTI ID:283411

Christen, H; Boatner, L A; Budai, J D; Chisholm, M F; Gea, L A; Marrero, P J; Norton, D P ^[1]

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1. Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

Potassium niobate (KNbO{sub 3}) thin films and potassium niobate/tantalate (KNbO{sub 3}/KTaO{sub 3}) superlattices have been grown on KTaO{sub 3} (001) substrates by pulsed laser deposition. The thin-film structures were analyzed by Rutherford backscattering/ion-channeling techniques, x-ray {theta}{endash}2{theta} and {Phi} scans, and both conventional and {ital Z}-contrast scanning transmission electron microscopy. Excellent film flatness and crystallinity are evidenced by these techniques. At room temperature, the KNbO{sub 3} films are characterized by an orthorhombic structure which differs from that of bulk KNbO{sub 3}. The interfaces between the layers in the KNbO{sub 3}/KTaO{sub 3} superlattice structures were found to be compositionally sharp on an atomic scale. {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: Oak Ridge National Laboratory
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 283411
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 11 Vol. 68; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABLATION
CRYSTAL STRUCTURE
DIELECTRIC MATERIALS
EPITAXY
GROWTH
LASER RADIATION
NIOBATES
POTASSIUM COMPOUNDS
RBS
RUTHERFORD SCATTERING
SUPERLATTICES
TANTALATES
THIN FILMS
X-RAY DIFFRACTION
XRD