Component composition and strain of barium-strontium titanate ferroelectric films
S. F. KarmanenkoA. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. PetersburgА. И. ДедыкA. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. PetersburgN. N. IsakovPhysicotechnical InstituteВ. И. СахаровElectricotechnical University, St. PetersburgА. А. СеменовPhysicotechnical InstituteI. T. SerenkovA. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. PetersburgL. T. Ter-MartirosyanA. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. Petersburg
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The effect of the ratios of the cationic components and internal strains on the critical temperature T c and the dielectric characteristics of BSTO ferroelectric films grown on α-Al2O3 [1012] and LaAlO3 substrates were investigated. Ion backscattering diagnostics revealed a barium deficiency in the surface layer of the films and showed that the films differ in structural quality.
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