UM
Griffiths-like ac nonlinearity in a disordered antiferroelectric
Colla E.V.2; Weissman M.B.2; Chan W.-H.1; Chen H.1
2004-05-01
Source PublicationPhysical Review B - Condensed Matter and Materials Physics
ISSN01631829
Volume69Issue:18
AbstractLarge nonlinear effects are found in a well-defined temperature range above the Neel point in a disordered antiferroelectric. The sign of the nonlinear susceptibility is opposite to that expected for clusters with internal ferroelectric interactions, indicating that the effect involves antiferroelectric clusters. An extended regime of third-harmonic generation which looks nonanalytic as a function of ac bias amplitude down to small fields is found, indicating that the distribution of cluster sizes extends to very large values, as expected for a Griffiths phase. However, the dependence of the susceptibility on dc fields shows no nonanalyticity, indicating that there is no true Griffiths phase.
DOI10.1103/PhysRevB.69.180101
URLView the original
Language英語
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.City University of Hong Kong
2.University of Illinois at Urbana-Champaign
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GB/T 7714
Colla E.V.,Weissman M.B.,Chan W.-H.,et al. Griffiths-like ac nonlinearity in a disordered antiferroelectric[J]. Physical Review B - Condensed Matter and Materials Physics,2004,69(18).
APA Colla E.V.,Weissman M.B.,Chan W.-H.,&Chen H..(2004).Griffiths-like ac nonlinearity in a disordered antiferroelectric.Physical Review B - Condensed Matter and Materials Physics,69(18).
MLA Colla E.V.,et al."Griffiths-like ac nonlinearity in a disordered antiferroelectric".Physical Review B - Condensed Matter and Materials Physics 69.18(2004).
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