Properties of layered structures based on barium titanate

A. S. Sidorkin , L. P. Nesterenko , Y. Gagou (1) , P. Saint-Gregoire , N. G. Popravko , A. Yu. Pakhomov

1 LPMC - Laboratoire de Physique de la Matière Condensée - UR UPJV 2081

The dielectric properties of the bipolar SrTiO3/BaTiO3/SrTiO(3)structures synthesized by pulsed laser sputtering on a single-crystal SrTiO(3)substrate doped with Nb with a buffer conducting oxide sublayer of LaSrCoO(3)are studied. It is shown that the structure has a transition temperature to the ferroelectric state approximately equal to 320 degrees C. The transition into the polar phase has all the features of a second-order phase transition. The indicated structures are characterized by the presence of an internal field entirely associated with the presence of a substrate.

Domaines: Matière Condensée [cond-mat]

A. S. Sidorkin, L. P. Nesterenko, Y. Gagou, P. Saint-Gregoire, N. G. Popravko, et al.. Properties of layered structures based on barium titanate. Ferroelectrics, 2020, 561 (1), pp.135-141. ⟨10.1080/00150193.2020.1736926⟩. ⟨hal-03627641⟩