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Jo, Wook
Sustainable Functional Ceramics Lab
Research Interests
  • Lead-free piezoceramics, ultra - low temperature sintering, ferroelectrics, relaxor ferroelectrics, 2D materials, magnetoelectric materials, multiferroics

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Universal Polarization Switching Behavior of Disordered Ferroelectrics

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Title
Universal Polarization Switching Behavior of Disordered Ferroelectrics
Author
Genenko, Yuri A.Zhukov, SergeyYampolskii, Sergey V.Schuetrumpf, JoergDittmer, RobertJo, WookKungl, HansHoffmann, Michael J.von Seggern, Heinz
Keywords
ceramics; ferroelectrics; ferroics; polarization switching; polymeric materials
Issue Date
2012-05
Publisher
WILEY-V C H VERLAG GMBH
Citation
ADVANCED FUNCTIONAL MATERIALS, v.22, no.10, pp.2058 - 2066
Abstract
Universal scaling features of polarization switching are established experimentally in rather different classes of disordered ferroelectrics: in well-studied lead-zirconate titanate (PZT) ferroelectrics, in recently synthesized Cu-stabilized 0.94(Bi1/2Na1/2)TiO30.06BaTiO3 (BNT-BT) relaxor ferroelectrics, and in classical organic ferroelectrics P(VDF-TrFE). These scaling properties are explained by an extended concept of an inhomogeneous field mechanism (IFM) of polarization dynamics in ferroelectrics. Accordingly, disordered ferroelectrics exhibit a wide spectrum of characteristic switching times due to a statistical distribution of values of the local electric field. How this distribution can be extracted from polarization measurements is demonstrated. Generally, it is shown that the polarization response is primarily controlled by the statistical characteristics of disorder rather than by a temporal law of the local polarization switching.
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DOI
10.1002/adfm.201102841
ISSN
1616-301X
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MSE_Journal Papers
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