We investigate the nonlinear response of the domain wall velocity (v) to an external electric field (Eext) in ferroelectric Si-doped HfO2 thin film capacitors using piezoresponse force microscopy (PFM) and switching current measurements. We verified the reliability of the PFM images of ferroelectric domain switching by comparing the switched volume fraction in the PFM images with the time-dependent normalized switched polarization from the switching current data. Using consecutive time-dependent PFM images, we measured the velocity of the pure lateral domain wall motion at various Eext. The Eext-dependent v values closely follow the nonlinear dynamic response of elastic objects in a disordered medium. The thermally activated creep and flow regimes were observed based on the magnitude of Eext. With a dynamic exponent of μ = 1, our thin film was found to have random-field defects, which is consistent with the Lorentzian distribution of characteristic switching time that was indicated in the switching current data.
Skip Nav Destination
Article navigation
8 March 2021
Research Article|
March 08 2021
Nonlinear domain wall velocity in ferroelectric Si-doped HfO2 thin film capacitors
Special Collection:
Ferroelectricity in Hafnium Oxide: Materials and Devices
So Yeon Lim;
So Yeon Lim
1
Department of Physics, Sogang University
, Seoul 04107, South Korea
Search for other works by this author on:
Min Sun Park;
Min Sun Park
2
Department of Physics, Sookmyung Women's University
, Seoul 04310, South Korea
Search for other works by this author on:
Ahyoung Kim;
Ahyoung Kim
1
Department of Physics, Sogang University
, Seoul 04107, South Korea
Search for other works by this author on:
Sang Mo Yang
Sang Mo Yang
a)
1
Department of Physics, Sogang University
, Seoul 04107, South Korea
a)Author to whom correspondence should be addressed: smyang@sogang.ac.kr
Search for other works by this author on:
a)Author to whom correspondence should be addressed: smyang@sogang.ac.kr
Note: This paper is part of the Special Topic on Materials and Devices Utilizing Ferroelectricity in Hafnium Oxide.
Appl. Phys. Lett. 118, 102902 (2021)
Article history
Received:
October 31 2020
Accepted:
February 20 2021
Citation
So Yeon Lim, Min Sun Park, Ahyoung Kim, Sang Mo Yang; Nonlinear domain wall velocity in ferroelectric Si-doped HfO2 thin film capacitors. Appl. Phys. Lett. 8 March 2021; 118 (10): 102902. https://doi.org/10.1063/5.0035753
Download citation file:
Sign in
Don't already have an account? Register
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Pay-Per-View Access
$40.00
Citing articles via
Roadmap on photonic metasurfaces
Sebastian A. Schulz, Rupert. F. Oulton, et al.
Feedback cooling of an insulating high-Q diamagnetically levitated plate
S. Tian, K. Jadeja, et al.
Compact widely tunable laser integrated on an indium phosphide membrane platform
Tasfia Kabir, Yi Wang, et al.