Superconductor-ferroelectric-superconductor (SFS) structures were produced by magnetron sputtering of ceramic YBa 2 Cu 3 O 7- delta and Ba x Sr 1-x TiO 3 targets. Raman spectroscopy was effectively used for characterization of superconducting and ferroelectric films in layered structures. Electrical characteristics, such as the temperature dependence of resistance, current-voltage and capacitance-voltage characteristics were measured. The possibility of applying SFS structures as cryoelectronic capacitors with voltage control is demonstrated.
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Karmanenko et al. (1994) studied this question.
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