On the possible internal structure of the ferroelectric Ising lines in BaTiO.sub.3./sub.

0474005 - FZÚ 2018 RIV GB eng J - Journal Article
Stepkova, Vilgelmina - Hlinka, Jiří
On the possible internal structure of the ferroelectric Ising lines in BaTiO₃.
Phase Transitions. Roč. 90, č. 1 (2017), s. 11-16. ISSN 0141-1594. E-ISSN 1029-0338
R&D Projects: GA ČR GA15-04121S
Institutional support: RVO:68378271
Keywords : Ginzburg-Landau-Devonshire model * phase-field * BaTiO₃ * topological defects
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 1.028, year: 2017

This article is devoted to a detailed analysis of the inner structure of the Ising line, a topological defect separating two parts of a ferroelectric Bloch domain wall with opposite helicity, in the framework of the phenomenological Ginzburg-Landau-Devonshire model. Results performed for Ising lines in a 211-oriented 180-degree domain wall of rhombohedral BaTiO3 suggest remarkably strong dependence of the polarization profiles on the form of gradient terms. Profiles of the skyrmion density, vorticity and divergence of the polarization field were calculated numerically in the few-nm vicinity of the Ising line defect.
Permanent Link: http://hdl.handle.net/11104/0271099