This article is cited in 13 papers

Surfaces, Electron and Ion Emission

Polarization of thin barium-strontium titanate films by an external electric field

V. B. Shirokov^a, S. V. Birukov^a, V. M. Mukhortov^a, Yu. I. Yuzyuk<sup>b

a</sup> Southern Research Center of the Russian Academy of Sciences, Rostov-on-Don
^b Southern Federal University, Rostov-on-Don

Abstract: The behavior of polarization of a Ba$_{0.8}$Sr$_{0.2}$TiO$_3$ thin film in an external electric field for a planar geometry of electrodes is described using a simple phenomenological model. The “van der Waals field” $E_z$ formed by the substrate along the normal to the film surface is introduced for fitting to experimental data. This field is estimated as $E_z$ = 1.1 $\times$ 10$^8$ V/m. The phase diagram of the Ba$_{0.8}$Sr$_{0.2}$TiO$_3$ film in the $E_z$ (misfit strain) at room temperature is analyzed.

Received: 18.11.2010

 English version: Technical Physics, 2011, 56:8, 1175–1180

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