Abstract:
In the present work, we studied the dielectric and switching properties of ferroelectric superlattices and multilayers with a barium titanate-type structure of individual layers. A detailed analysis was performed on a BaTiO$_3$/BaZrO$_3$ ferroelectric superlattices (16 layer pairs) that exhibit a phase transition at temperature of 393$^\circ$C, and the latter is significantly higher temperature of a phase transition in bulk and thin-film BaTiO$_3$. The other study objects were strontium titanate/lead titanate/strontium titanate multilayers, where materials of the layers had close temperatures of the transition to the ferroelectric state and unit cell parameters. Differences in the behavior of the properties of the BaTiO$_3$/BaZrO$_3$ superlattices and BaTiO$_3$/BaZrO$_3$ multilayers were revealed and associated with the strength of mechanical and electrical interactions between the structure layers.
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