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(Ba 0.5 Sr 0.5 )Nb 2 O 6 films were synthesized on a Pt(111)/Si(001) substrate by RF gas-discharge sputtering in pure oxygen atmosphere. It was found that the films have a dominant crystallographic orientation in the [001] direction and natural unipolarity, which was revealed through analysis of dielectric and piezoelectric parameters. It was demonstrated that the optical parameters of film material in the Ba 0.5 Sr 0.5 , Nb 2 O 6 /Pt(111)/Si(001) heterostructure match those typical for a (Ba 0.5 Sr 0.5 )Nb 2 O 6 single crystal.
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Kovtun et al. (2016) studied this question.
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