Aging in a relaxor ferroelectric: Scaling and memory effects

Citation
Ev. Colla et al., Aging in a relaxor ferroelectric: Scaling and memory effects, PHYS REV L, 85(14), 2000, pp. 3033-3036
Citations number
31
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
85
Issue
14
Year of publication
2000
Pages
3033 - 3036
Database
ISI
SICI code
0031-9007(20001002)85:14<3033:AIARFS>2.0.ZU;2-U
Abstract
A crossover as a function of temperature is found in the zero-field aging p roperties of the relaxer ferroelectric Pb(Mg1/3Nb2/3)O-3 Below a temperatur e near which nonlinear susceptibility has indicated a suspected phase trans ition, the time-frequency dependence shows simple scale-independent behavio r resembling that for spin glasses. As in spin glasses, high temperature ag ing is stable as further aging occurs at lower temperature, but not vice ve rsa, indicating hierarchical state arrangement. A more general interpretati on of such effects is briefly discussed.