Specific features of the ferroelectric state in two-layer barium strontium titanate-based heterostructures

The structural properties of one- and two-layer heterostructures based on the barium–strontium titanate of various compositions deposited by the Frank–Van der Merve on a magnesium oxide substrate have been studied. The heterostructures have been prepared by the rf sputtering of the stoichiometric ce...

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Bibliographic Details
Published in:Physics of the solid state 2018-01, Vol.60 (1), p.115-119
Main Authors: Stryukov, D. V., Mukhortov, V. M., Golovko, Yu. I., Biryukov, S. V.
Format: Article
Language:English
Subjects:
Barium
BARIUM COMPOUNDS
Barium strontium titanates
CERAMICS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL GROWTH
CRYSTAL STRUCTURE
DEPOSITION
Electricity
FERROELECTRIC MATERIALS
Ferroelectricity
Heterostructures
LAYERS
Magnesium oxide
MAGNESIUM OXIDES
MONOCRYSTALS
Physics
Physics and Astronomy
PLASMA
Radio frequency
Single crystals
Solid State Physics
SPUTTERING
STOICHIOMETRY
STRONTIUM COMPOUNDS
SUBSTRATES
TITANATES
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Summary:The structural properties of one- and two-layer heterostructures based on the barium–strontium titanate of various compositions deposited by the Frank–Van der Merve on a magnesium oxide substrate have been studied. The heterostructures have been prepared by the rf sputtering of the stoichiometric ceramic targets in a Plazma 50 SE deposition system. The principal difference of this method of deposition from known analogs is that the growth of single-crystal films occurs from a disperse oxide phase formed in the plasma of a high-current rf discharge during the ceramic target sputtering at the cluster level. The peculiarities of the manifestation of the ferroelectric state in the two-layer heterostructures when changing the sequence order of the films with various compositions of barium–strontium titanate.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783418010250