University of Oulu

Yudin, P., Shapovalov, K., Sluka, T. et al. Mobile and immobile boundaries in ferroelectric films. Sci Rep 11, 1899 (2021).

Mobile and immobile boundaries in ferroelectric films

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Author: Yudin, P.1,2; Shapovalov, K.3,4; Sluka, T.5;
Organizations: 1Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 18221 Praha 8, Czech Republic
2Kutateladze Institute of Thermophysics, Siberian Branch of Russian Academy of Science, Lavrent’eva av. 1, Novosibirsk, Russia
3Institutut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus UAB, 08193 Bellaterra, Spain
4CNRS, Université de Bordeaux, ICMCB, UPR, 9048, 33600 Pessac, France
5CREAL SA, Chemin du Paqueret 1A, CH‑1025 Saint‑Sulpice, Switzerland
6Microelectronics Research Unit, University of Oulu, P.O. Box 4500, 90014 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.4 MB)
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Language: English
Published: Springer Nature, 2021
Publish Date: 2021-05-10


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.

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Series: Scientific reports
ISSN: 2045-2322
ISSN-E: 2045-2322
ISSN-L: 2045-2322
Volume: 11
Issue: 1
Article number: 1899
DOI: 10.1038/s41598-021-81516-w
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
213 Electronic, automation and communications engineering, electronics
Funding: The authors are grateful to Prof. A. Gruverman for useful discussions. Marijke Spanjer is acknowledged for proofreading the manuscript. PY acknowledges the Russian Foundation for Basic Research, Grant No. 19-02-00938. The study of the interaction of ferroelastic DWs with CBs was carried out under a state contract with IT SB RAS. KS acknowledges the support by the French Government "Investments for the Future" Program, University of Bordeaux Initiative of Excellence (IDEX Bordeaux), and by the Generalitat de Catalunya (Grant No. 2017SGR 1506). PY, AD and MT acknowledge the Operational Program Research, Development and Education, financed by the European Structural and Investment Funds and the Czech Ministry of Education, Youth, and Sports (Project No. SOLID21, CZ.02.1.01/0.0/0.0/16_019/0000760). MT acknowledges support from the Czech Science Foundation (Grant No. 19-09671S). JP acknowledges the funding from the Academy of Finland (Grant No. 298409).
Academy of Finland Grant Number: 298409
Detailed Information: 298409 (Academy of Finland Funding decision)
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