The nature of different behaviour of PSN and PST relaxors

Authors
Caranoni, C Menguy, N Hilczer, B Glinchuk, M Stephanovich, V
Citation
C. Caranoni et al., The nature of different behaviour of PSN and PST relaxors, FERROELECTR, 240(1-4), 2000, pp. 1507-1514
Citations number
39
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
FERROELECTRICS
ISSN journal
00150193 → ACNP
Volume
240
Issue
1-4
Year of publication
2000
Pages
1507 - 1514
Database
ISI
SICI code
0015-0193(2000)240:1-4<1507:TNODBO>2.0.ZU;2-P
Abstract
Dielectric anomaly of disordered PSN appears at higher temperature than tha t of the ordered PSN, whereas in PST the situation is opposite. TEM studies of Pb[Sc-0.5(Nb1-xTax)]O-3 single crystals (x = 0, x = 1, x = 0.3) show th at PSN crystals are grown in more disordered state than the PST crystals an d the PSNT crystals are the mostly ordered: linear sizes of {111} ordered r egions are 3-4 nm, 30-40 nm and 60-100 nm, respectively. The behaviour is a ssociated with nonlinear and spatial correlation contribution to the random field distribution function.