Phase transitions in ferroelectric domain walls

• Published in: Condensed Matter Physics
• Main Authors: E. A. Eliseev, M. D. Glinchuk, L. P. Yurchenko, P. Maksymovych, A. N. Morozovska
• Format: Article
• Language: English
• Published: Yukhnovskii Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine 2022-12-01
• Subjects: ferroelectrics; domain walls; local phase transition
• Online Access: https://doi.org/10.5488/CMP.25.43706

Despite multiple efforts, there exist many unsolved fundamental problems related with detection and analysis of internal polarization structure and related phase transitions in ferroelectric domain walls. Their solution can be very important for the progress in domain wall nanoelectronics and related applications in advanced memories and other information technologies. Here, we theoretically study the features of phase transitions in the domain walls, which are potentially detectable by the scanning probe capacitance microwave microscopy. The finite element modelling based on the Landau-Ginzburg-Devonshire theory is performed for the capacitance changes related with the domain wall motion in a multiaxial ferroelectric BaTiO_3.