Polarization reversal and jump-like domain wall motion in stoichiometric LiTaO3 produced by vapor transport equilibration / Shur V. Ya.,Akhmatkhanov A. R.,Baturin I. S.,Shishkina E. V. // JOURNAL OF APPLIED PHYSICS. - 2012. - V. 111, l. 1.

ISSN/EISSN:

0021-8979 / нет данных

Type:

Article

Abstract:

The polarization reversal and domain structure evolution has been studied in stoichiometric lithium tantalate prepared by vapor transport equilibration process. The first in situ visualization of domain kinetics has demonstrated the jump-like motion of few strictly oriented plane domain walls, which leads to short isolated current pulses in the switching current data. The proposed model of jump-like domain wall motion caused by interaction with pinning centers representing the areas with increased value of the threshold field is based on the effect of retardation of bulk screening. The derived formulas were applied successfully for analysis of the field dependence of the total switching time. The durations of wall jumps and wall stays (rest times) extracted from the switching current data are analyzed separately. The deceleration of the wall motion velocity during jump is controlled by the trail of residual depolarization field produced by bound charges and screening charges in the area behind the wall. The duration of the rest time is governed by the bulk screening of residual depolarization field. The value of Hurst exponent 0.75 obtained by fractal analysis of the switching current data has confirmed the essential influence of prehistory on the domain wall motion. The measurements of the coercive field by switching in bipolar triangular pulses in wide range of the field ramp rate have allowed us to extract the record low value of coercive field 60 V/mm for quasi-static polarization reversal. (C) 2012 American Institute of Physics. {[}doi:10.1063/1.3673601]

Author keywords:

LITHIUM TANTALATE FAMILY; E HYSTERESIS LOOP; SINGLE-CRYSTALS; FERROELECTRIC DOMAINS; BARIUM TITANATE; SWITCHING TIME; NIOBATE; CONGRUENT; LINBO3; DEPENDENCE

DOI:

10.1063/1.3673601

Web of Science ID:

ISI:000299127200075

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JAN 1
Publisher	AMER INST PHYSICS
Address	CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA
Language	English
Article-Number	014101
Keywords-Plus	LITHIUM TANTALATE FAMILY; E HYSTERESIS LOOP; SINGLE-CRYSTALS; FERROELECTRIC DOMAINS; BARIUM TITANATE; SWITCHING TIME; NIOBATE; CONGRUENT; LINBO3; DEPENDENCE
Research-Areas	Physics
Web-of-Science-Categories	Physics, Applied
Author-Email	vladimir.shur@usu.ru
ResearcherID-Numbers	Akhmatkhanov, Andrei/A-8072-2010 Shishkina, Ekaterina/I-1829-2017 Baturin, Ivan/B-1164-2008 Shur, Vladimir/J-9078-2015
ORCID-Numbers	Akhmatkhanov, Andrei/0000-0002-2802-9134 Shishkina, Ekaterina/0000-0002-2574-7472 Baturin, Ivan/0000-0002-7033-6103
Funding-Acknowledgement	RFBR {[}10-02-96042-r-Ural-a, 10-02-00627-a, 11-02-91066-CNRS-a]; Ministry of Education and Science {[}16.552 11 7020]
Funding-Text	The authors would like to acknowledge R. Route, D. Hum, L.L. Galambos, and R.O. Miles for providing samples of VTE-LT. The research was made possible in part by RFBR (Grants 10-02-96042-r-Ural-a, 10-02-00627-a, and 11-02-91066-CNRS-a) and by Ministry of Education and Science (Contract 16.552 11 7020).
Number-of-Cited-References	32
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	35
Journal-ISO	J. Appl. Phys.
Doc-Delivery-Number	876SE