Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session X04: Dielectric & Ferroic Oxides -- Structure & Functionality of Ferroic Domain Walls
8:00 AM–10:48 AM,
Friday, March 8, 2019
BCEC
Room: 107C
Sponsoring
Units:
DMP DCOMP
Chair: Javier Junquera, University of Cantabria
Abstract: X04.00010 : Designing ferroic domain states and coupling through low-energy He-irradiation*
10:36 AM–10:48 AM
Presenter:
Andreas Herklotz
(Institute for Physics, Martin-Luther-University Halle-Wittenberg)
Authors:
Andreas Herklotz
(Institute for Physics, Martin-Luther-University Halle-Wittenberg)
Robert Roth
(Institute for Physics, Martin-Luther-University Halle-Wittenberg)
Kathrin Dorr
(Institute for Physics, Martin-Luther-University Halle-Wittenberg)
Yogesh Sharma
(Oak Ridge National Laboratory)
Thomas Ward
(Oak Ridge National Laboratory)
As an alternative approach we deploy low-energy He implantation to induce out-of-plane strain in epitaxial ferroelectric thin films, while the in-plane strain due to coherent growth on single-crystal substrates remains fixed. We show that this kind of uniaxial strain engineering effectively alters the ratio of ferroelectric and ferroelastic domains in BaTiO3 and BiFeO3 films. We also demonstrate that controlling domains by strain doping can provide a direct handle on ferromagnetic metal films magnetoelastically coupled to the interfaced ferroelectric films.
*This effort was supported by the DFG SFB 762 and the US Department of Energy (DOE), Office of Basic Energy Sciences (BES), Materials Sciences and Engineering Division
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