Phenomenological description of dielectric permittivity peak in relaxor ferroelectrics

Authors
Citation
Aa. Bokov et Zg. Ye, Phenomenological description of dielectric permittivity peak in relaxor ferroelectrics, SOL ST COMM, 116(2), 2000, pp. 105-108
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
00381098 → ACNP
Volume
116
Issue
2
Year of publication
2000
Pages
105 - 108
Database
ISI
SICI code
0038-1098(2000)116:2<105:PDODPP>2.0.ZU;2-O
Abstract
We found that, at the so-called diffuse phase transition in relaxer ferroel ectrics, the dielectric permittivity epsilon obeys the relation epsilon(A)/ epsilon = 1 + 0.5(T - T-A)(2)/delta(A)(2) in a wide temperature range above the temperature of permittivity maximum T-m (T-m > T-A). The parameter del ta(A) remains invariant with the variation of measurement frequency and cha racterizes the diffuseness of the transition. (C) 2000 Elsevier Science Ltd . All rights reserved.