4 papers
Experimentally constrained modeling of the Pockels response of KNbO3 and KTaNbO3
Virginie de Mestral, Lorenzo Bastonero, Petr Bednyakov +6
The soft-mode of electro-optic (EO) metal-oxide perovskites plays a critical role in determining their Pockels responses. This is the case of potassium tantalate niobate (KTN), whi…
Photovoltaic creation of charged domain walls in barium titanate
P. S. Bednyakov, P. V. Yudin, A. K. Tagantsev +1
The optical control of domain structures in ferroelectrics is of great interest. In the present work, we demonstrate the reliable creation of charged domain walls - conductive chan…
Paradoxical creation of a polydomain pattern by electric field in BaTiO3 crystal
Petr S. Bednyakov, Petr V. Yudin, Alexander K. Tagantsev +1
It is known that ferroelectric single crystals can be turned from a polydomain to a monodomain state by the application of an electric field. Here we report an unexpected opposite…
Fragmented charged domain wall below the tetragonal-orthorhombic phase transition in BaTiO3
Petr S. Bednyakov, Iegor Rafalovskyi, Jiri Hlinka
Ferroelectric charged domain walls are known for their high electrical conductivity, making them promising candidates for applications in modern electronics. A remarkably high cond…