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Optical properties of Sr0.6Ba0.4Nb2O6 films on single-crystal MgO(001) and MgO(110) substrates
Tekhtelev Yu. V.
1, Korchikova N. V.
1, Pavlenko A. V.
2,3
1Lugansk State Pedagogical University, Lugansk, Russia
2Scientific Research Institute of Physics, Southern Federal University, Rostov-on-Don, Russia
3Federal Research Center Southern Scientific Center of the Russian Academy of Sciences, Rostov-on-Don, Russia
2Scientific Research Institute of Physics, Southern Federal University, Rostov-on-Don, Russia
3Federal Research Center Southern Scientific Center of the Russian Academy of Sciences, Rostov-on-Don, Russia
Email: tehtelev@gmail.com, nkorchikova55@mail.ru, tolik_260686@mail.ru
The optical characteristics of Sr0.6Ba0.4Nb2O6 (SBN60) films of different thicknesses grown by RF cathodic sputtering in oxygen atmosphere on MgO(001) and MgO(110) substrates were studied using spectrophotometry and ellipsometry. It has been established that only when SBN60 films grow on MgO(110) substrates, a significant anisotropy of their optical properties is detected, which increases with decreasing film thickness. The reasons for the revealed regularities, as well as the role of the film nanostructure in the analysis of their optical properties, are discussed. Keywords: thin films, magnesium oxide, barium-strontium niobate, spectrophotometry, ellipsometry.
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