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arXiv · 1009.5857

Electric-field-induced monoclinic phase in (Ba,Sr)TiO$_3$ thin film

A. S. Anokhin·Yu. I. Yuzyuk·Yu. I. Golovko·V. M. Mukhortov·M. El Marssi
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Abstract

We have studied electric-field-induced symmetry lowering in the tetragonal (001)-oriented heteroepitaxial (Ba$_{0.8}$Sr$_{0.2}$)TiO$_3$ thin film deposited on (001)MgO substrate. Polarized micro-Raman spectra were recorded from the film area in between two planar electrodes deposited on the film surface. Presence of \textit{c}-domains with polarization normal to the substrate was confirmed from polarized Raman study under zero field, while splitting and hardening of the \textit{E}(TO) soft mode and polarization changes in the Raman spectra suggest monoclinic symmetry under external electric field.

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A. S. Anokhin, Yu. I. Yuzyuk, Yu. I. Golovko, V. M. Mukhortov, M. El Marssi. 2010-09-29. Electric-field-induced monoclinic phase in (Ba,Sr)TiO$_3$ thin film. https://doi.org/10.1063/1.3573516

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