Domain structures in the perovskite-type heteroepitaxial ferroelectric thin films

Zygmunt Surowiak; Vladimir A. Aleshin; Dionizy Czekaj

doi:10.1117/12.425405

17 April 2001 Domain structures in the perovskite-type heteroepitaxial ferroelectric thin films

Zygmunt Surowiak, Vladimir A. Aleshin, Dionizy Czekaj

Proceedings Volume 4413, International Conference on Solid State Crystals 2000: Epilayers and Heterostructures in Optoelectronics and Semiconductor Technology; (2001) https://doi.org/10.1117/12.425405
Event: International Conference on Solid State Crystals 2000, 2000, Zakopane, Poland

Abstract

Heteroepitaxial PbTiO₃ and (Ba_1-xSr_x)TiO₃ thin films were obtained by the RF sputtering method. The (100) cuts of MgO single crystals were used as substrates. The films exhibited ferroelectric properties closely similar to those of the ceramic targets. Depending on substrate temperature (T_s) with other deposition parameters constant, heteroepitaxial films of various degree of perfection of the crystalline structure were obtained. It has been found that the crystal structure of the PbTiO₃//(100) MgO and (Ba_1-xSr_x)TiO//(100)MgO films for x<0.3 at room temperature belongs to the tetragonal system P4mm. Phase transitions in the (Ba_1-xSr_x)TiO₃//(100)MgO films unlike those in the PbTiO₃//(100)MgO films exhibited marked broadening. The domain structure of the heteroepitaxial films in comparison with that of the free ferroelectric single crystals shows certain singular features. The PbTiO₃//(100)MgO films exhibit characteristic a-c-domain structure while the (Ba_1-xSr_x)TiO₃//(100)MgO films have c-c-domain structure.

Citation Download Citation

Zygmunt Surowiak, Vladimir A. Aleshin, and Dionizy Czekaj "Domain structures in the perovskite-type heteroepitaxial ferroelectric thin films", Proc. SPIE 4413, International Conference on Solid State Crystals 2000: Epilayers and Heterostructures in Optoelectronics and Semiconductor Technology, (17 April 2001); https://doi.org/10.1117/12.425405

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