0601874 - FZÚ 2025 RIV US eng J - Článek v odborném periodiku
Zatterin, E.M. - Ondrejkovič, Petr - Bastogne, L. - Lichtensteiger, C. - Tovaglieri, L. - Chaney, D.A. - Sasani, A. - Schülli, T. - Bosak, A. - Leake, S. - Zubko, P. - Ghosez, Ph. - Hlinka, Jiří - Triscone, J.-M. - Hadjimichael, M.
Assessing the ubiquity of Bloch domain walls in ferroelectric lead titanate superlattices.
Physical Review X. Roč. 14, č. 4 (2024), č. článku 041052. ISSN 2160-3308. E-ISSN 2160-3308
Grant CEP: GA MŠMT(CZ) EH22_008/0004591
GRANT EU: European Commission(XE) 964931 - TSAR
Institucionální podpora: RVO:68378271
Klíčová slova: superlattices * ferroelectric domains * first-principles calculations * phase-field modeling * x-ray diffuse scattering
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 11.6, rok: 2023 ; AIS: 6.038, rok: 2023
Způsob publikování: Open access
DOI: https://doi.org/10.1103/PhysRevX.14.041052

Bloch components in the 180° domain walls of PbTiO3 have recently been reported in PbTiO3/SrTiO3 superlattices and linked to domain wall chirality. In this work, we present a comprehensive investigation of domain walls in PbTiO3/SrTiO3 superlattices, involving a combination of first- and second-principles calculations, phase-field simulations, diffuse scattering calculations, and synchrotron-based diffuse x-ray scattering. Our theoretical calculations highlight that the previously predicted Bloch polarization in the 180° domain walls in PbTiO3/SrTiO3 superlattices might be more sensitive to the boundary conditions than initially thought. Employing diffuse scattering calculations for larger systems, we develop a method to probe the complex structure of domain walls in these superlattices via diffuse x-ray scattering measurements. Our experimental findings do not reveal any signatures of a Bloch component in the centers of the 180° domain walls of PbTiO3/SrTiO3 superlattices.
Trvalý link: https://hdl.handle.net/11104/0359136


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