KTa0.65Nb0.35O3 thin films epitaxially grown by pulsed laser deposition on metallic and oxide epitaxial electrodes

► Ferroelectric KTa0.65Nb0.35O3 thin films grown by pulsed laser deposition. ► KTa0.65Nb0.35O3 epitaxially grown on Pt and LaNiO3 epitaxial electrodes. ► Influence of oxide vs. metal electrode on ferroelectric's structural properties. ► AFM/TUNA mode investigation of KTa0.65Nb0.35O3/Pt heterostructure. ► Asymmetry of the conduction mechanisms (positive vs. negative applied voltage).