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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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Polarization dynamics across the morphotropic phase boundary in Ba(Zr0.2Ti0.8)O-3-x(Ba0.7Ca0.3)TiO3 ferroelectrics

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Title
Polarization dynamics across the morphotropic phase boundary in Ba(Zr0.2Ti0.8)O-3-x(Ba0.7Ca0.3)TiO3 ferroelectrics
Author
Zhukov, SergeyGenenko, Yuri A.Acosta, MatiasHumburg, HeideJo, WookRoedel, Juergenvon Seggern, Heinz
Keywords
Analysis of polarizations; Chemical compositions; Compositional region; Ferroelectric property; Inhomogeneous fields; Microscopic mechanisms; Morphotropic phase boundaries; Polarization dynamics
Issue Date
2013-10
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.103, no.15, pp. -
Abstract
Analysis of polarization switching dynamics by means of the inhomogeneous field mechanism model allows insight into the microscopic mechanism of reversed polarization domain nucleation. For all chemical compositions studied, two distinct field regions of nucleation are established. In the high-field region, the activation energy barrier is found to be inversely proportional to the local field according to the Merz law. In contrast, the barriers in the low-field region exhibit a linear field dependence with a minimum in the compositional region of phase instability, which can explain the corresponding peak ferroelectric properties.
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DOI
10.1063/1.4824730
ISSN
0003-6951
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MSE_Journal Papers
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