Spontaneous and induced surface piezoresponse in PbMg1/3Nb2/3O3 single crystals
authors Shvartsman, VV; Kholkin, AL
nationality International
journal ZEITSCHRIFT FUR KRISTALLOGRAPHIE-CRYSTALLINE MATERIALS
author keywords Relaxors; Piezoresponse force microscopy; Polar nanoregions; Lead magnesium niobate; Polarization relaxation
keywords RELAXOR FERROELECTRICS; FORCE MICROSCOPY; ORDER
abstract The polarization state of relaxor PbMg1/3Nb2/3O3 single crystals was studied using piezoresponse force microscopy. Areas of correlated polarization with a size of similar to 50 nm were observed in the nominally ergodic relaxor state. These areas were attributed to ensembles of frozen polar nanoregions, which may exist in vicinity of the sample surface. Relatively strong piezoresponse could be induced by applying a dc electric field. After removing the field, a relaxation of the piezoelectric signal obeying power time dependence was observed. This induced piezoresponse was attributed to a contribution from dynamic polar nanoregions.
publisher WALTER DE GRUYTER GMBH
issn 2194-4946
year published 2011
volume 226
issue 2
beginning page 108
ending page 112
digital object identifier (doi) 10.1524/zkri.2011.1296
web of science category Crystallography
subject category Crystallography
unique article identifier WOS:000288102900003
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