Tilt control of the charged domain walls created by local switching on the non-polar cut of MgO doped lithium niobate single crystals

Abstract

Growth of the wedge-like domains with charged domain walls was studied under local switching by a biased tip on nonpolar cut of MgO doped lithium niobate crystal. The tilt of the domain wall from the polar direction was controlled by voltage and number of switching pulses. The tilt reduction with voltage was observed. The essential tilt increasing up to 4° caused by width growth was revealed for application of the several pulses with the same parameters. The obtained results were attributed to the step generation in the external field and kink motion in the field produced by the charged kinks.

Keywords:

• Ferroelectric domains
• charged domain walls
• local switching
• non-polar cut
• lithium niobate

Acknowledgment

The equipment of the Ural Center for Shared Use “Modern Nanotechnology” UrFU was used.

Additional information

Funding

The research was made possible by Russian Foundation for Basic Research (grant No. 20-32-90200). VS is grateful for financial support of the Ministry of Science Higher Education of the Russian Federation (state task FEUZ-2020-0054).