Abstract

Thin monocrystalline films of KTa1−xNbxO3 have been grown on [100] and [110] KTaO3 substrates by liquid-phase epitaxy (LPE) from diluted KF-KCl fluxes. Average growth rates of 0.5–4 μm min−1 produced uniform film thicknesses from ∼ 3 to 30 μm. As-grown films on [100] KTaO3 were optically transparent and showed a flat surface, whereas in [110] orientation pronounced facets were formed. The films have been characterized by means of X-ray diffraction, microprobe analysis, scanning electron microscopy and other methods.

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