Structure and Dielectric Properties of Barium-Strontium Niobate Thin Films Grown on MgO(110) and MgO(001) Single-Crystal Substrates
Stryukov D. V.
1, Matyash Ya. Yu.
1, Pavlenko A. V.
11Federal Research Center Southern Scientific Center of the Russian Academy of Sciences, Rostov-on-Don, Russia
Email: strdl@mail.ru, matyash.ya.yu@gmail.com, tolik_260686@mail.ru
Sr0.6Ba0.4Nb2O6 thin films of ~550 nm thickness with a preliminarily deposited conductive SrRuO3 layer of ~150 nm thickness were grown on MgO(110) and MgO(001) substrates by RF-cathode sputtering in an oxygen atmosphere. X-ray diffraction studies have shown that the obtained films have no unit cell strain, while for barium-strontium niobate film on an MgO(110) substrate it has been found for the first time that the [001] polar axis lies in the interface plane with the substrate. It is shown that the films differ significantly in surface morphology, dielectric and ferroelectric properties measured in the out-of-plane direction. Keywords: thin films, barium-strontium niobate, SBN, MgO(110) substrate.
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