Mobile and immobile boundaries in ferroelectric films
Open Access
- 21 January 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in Scientific Reports
- Vol. 11 (1), 1-8
- https://doi.org/10.1038/s41598-021-81516-w
Abstract
The intrinsic mobile interfaces in ferroelectrics—the domain walls can drive and enhance diverse ferroelectric properties, essential for modern applications. Control over the motion of domain walls is of high practical importance. Here we analyse theoretically and show experimentally epitaxial ferroelectric films, where mobile domain walls coexist and interact with immobile growth-induced interfaces—columnar boundaries. Whereas these boundaries do not disturb the long-range crystal order, they affect the behaviour of domain walls in a peculiar selective manner. The columnar boundaries substantially modify the behaviour of non-ferroelastic domains walls, but have negligible impact on the ferroelastic ones. The results suggest that introduction of immobile boundaries into ferroelectric films is a viable method to modify domain structures and dynamic responses at nano-scale that may serve to functionalization of a broader range of ferroelectric films where columnar boundaries naturally appear as a result of the 3D growth.Funding Information
- Russian Foundation for Basic Research (19-02-00938)
- Generalitat de Catalunya (2017SGR 1506)
- Academy of Finland (298409)
- Grantová Agentura České Republiky (19-09671S)
- a state contract with IT SB RAS
- Operational Program Research, Development and Education (SOLID21, CZ.02.1.01/0.0/0.0/16_019/0000760)
- French Government "Investments for the Future" Program
- University of Bordeaux Initiative of Excellence
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