Screening and retardation effects on 180 degrees-domain wall motion in ferroelectrics: Wall velocity and nonlinear dynamics due to polarization-screening charge interactions / Eliseev E. A.,Morozovska A. N.,Svechnikov G. S.,Rumyantsev E. L.,Shishkin E. I.,Shur V. Y.,Kalinin S. V. // PHYSICAL REVIEW B. - 2008. - V. 78, l. 24.

ISSN/EISSN:

1098-0121 / 1550-235X

Type:

Article

Abstract:

The effect of the domain wall intrinsic width, relaxation time of the screening charges, and the dead layer thickness on the velocity of the planar 180 degrees-domain wall moving under homogeneous external electric field in ferroelectric capacitor is analyzed. The limiting cases of domain wall motion, including (i) the motion induced by the external and local internal field originated at the wall-surface junction for nonzero dead layer thickness and (ii) the motion induced by the effective electric field averaged over the domain wall surface, are considered. We demonstrate the crossover between two screening regimes: the first one corresponds to the low domain wall velocity, when the wall drags the sluggish screening charges, while the second regime appears for high domain wall velocity, when the delay of sluggish screening charges are essential and the wall depolarization field is screened by the instant free charges located at the electrode. The integral and approximate analytical expressions for electric field and algebraic equation for the domain wall velocity are derived. It is shown that in the local-field limit the motion can be unstable, since the internal field at the wall-surface junction decreases for larger domain wall velocities, making possible self-acceleration of the wall near the top surface. The instability may lead to the domain wall-surface bending and actual broadening in thick samples, as well as formation of periodic domain structures in the direction of wall motion. The motion in the limit of the averaged effective field is always stable.

Author keywords:

dielectric depolarisation; dielectric polarisation; dielectric relaxation; electric domain walls; ferroelectric capacitors HIGHLY-NONEQUILIBRIUM CONDITIONS; PBZRXTI1-XO3 THIN-FILMS; DOMAIN-WALLS; LITHIUM-NIOBATE; PHASE-TRANSITION; BARIUM-TITANATE; SWITCHING TIME; SURFACE; BATIO3; DEPENDENCE

DOI:

10.1103/PhysRevB.78.245409

Web of Science ID:

ISI:000262246400076

Соавторы в МНС:

Другие поля

Поле	Значение
Month	DEC
Publisher	AMER PHYSICAL SOC
Address	ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Language	English
Article-Number	245409
EISSN	1550-235X
Keywords-Plus	HIGHLY-NONEQUILIBRIUM CONDITIONS; PBZRXTI1-XO3 THIN-FILMS; DOMAIN-WALLS; LITHIUM-NIOBATE; PHASE-TRANSITION; BARIUM-TITANATE; SWITCHING TIME; SURFACE; BATIO3; DEPENDENCE
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	morozo@i.com.ua sergei2@orn1.gov
ResearcherID-Numbers	Kalinin, Sergei/I-9096-2012 Shur, Vladimir/J-9078-2015
ORCID-Numbers	Kalinin, Sergei/0000-0001-5354-6152
Funding-Acknowledgement	National Academy of Science of Ukraine; Russian Academy of Science {[}NASU N 17-Ukr\_a]; RFBR {[}N 08-02-90434]; Division of Scientific User Facilities; DOE BES
Funding-Text	E. E. A., A. N. M., G. S. S., E. L. R., E. I. S., and V. Y. S. gratefully acknowledge financial support from National Academy of Science of Ukraine and Russian Academy of Science, joint Russian-Ukrainian grant under Grant No. NASU N 17-Ukr\_a (RFBR under Grant No. N 08-02-90434). The research is supported in part (S.V.K.) by the Division of Scientific User Facilities, DOE BES.
Number-of-Cited-References	42
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	30
Journal-ISO	Phys. Rev. B
Doc-Delivery-Number	391PY