Influence of pinning effects on the ferroelectric hysteresis in cerium-doped Sr0.61Ba0.39Nb2O6 - art. no. 174101

Authors
Granzow, T Dorfler, U Woike, T Wohlecke, M Pankrath, R Imlau, M Kleemann, W
Citation
T. Granzow et al., Influence of pinning effects on the ferroelectric hysteresis in cerium-doped Sr0.61Ba0.39Nb2O6 - art. no. 174101, PHYS REV B, 6317(17), 2001, pp. 4101
Citations number
28
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
6317
Issue
17
Year of publication
2001
Database
ISI
SICI code
0163-1829(20010501)6317:17<4101:IOPEOT>2.0.ZU;2-V
Abstract
The temporal behavior of ferroelectric domains under external electric fiel d is investigated in cerium-doped strontium-barium-niobate crystals using q uasistatic surface-charge detection. The polarization reversal depends stro ngly on frequency. temperature, dark conductivity, and doping concentration . This so-called electrical aging is attributed to electric pinning centers that hinder the domain-wall motion. We discuss the existence of pinning ce nters on the basis of the quenched random-field model.