The proportion of frozen local polarization in relaxor ferroelectrics

Authors
Liu, ZR Zhang, Y Gu, BL Zhang, XW
Citation
Zr. Liu et al., The proportion of frozen local polarization in relaxor ferroelectrics, J PHYS-COND, 13(5), 2001, pp. 1133-1139
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS-CONDENSED MATTER
ISSN journal
09538984 → ACNP
Volume
13
Issue
5
Year of publication
2001
Pages
1133 - 1139
Database
ISI
SICI code
0953-8984(20010205)13:5<1133:TPOFLP>2.0.ZU;2-R
Abstract
A Landau-type phenomenological cluster theory for modelling the freezing pr ocess of the local polarization in relaxors is presented. On the basis of t he theory, the proportion of frozen polarization in Pb(Mg1/3Nb2/3)O-3-PbTiO 3 (PMNT) is calculated from the experimental dielectric non-linearity. The local polarization is shown to freeze continuously in a cooling process. Th e amount of frozen polarization increases with increasing measuring frequen cy.