Anomalous Polarization Switching Characteristics in a Ferroelectric Heterostructure

Anomalous Polarization Switching Characteristics in a Ferroelectric Heterostructure IntroductionFerroelectric heterostructures or multilayers have attracted enormous interests in recent years for their intriguing physical performance. Experimental results revealed larger polarization, dielectric, tunibility, and antiferroelectriclike hysteresis loop etc. in ferroelectric heterostructures or multibilayers. In view of theoretical analysis, some major factors affecting ferroelectric heterostructures characteristics are regarded as misfit strain, interfacial coupling, inhomogeneous polarization near interface, composition effects, layer thickness, space charge. Thus, lots of researchers established various theoretical models of ferroelectric heterostructures, superlattice structures, or bilayers to investigate the influence of the above factors on the properties of these systems.In the beginning, theorists studied the static properties of these systems using the Landau type theory or transverse Ising model, and obtained some interesting phenomena. In order to approach the realistic applications, some researchers were dedicated to investigating the dynamic characteristics by means of Landau–Devonshire theory combined with Landau–Khalatnikov dynamic equation. Ong et al. have studied the dynamic properties of ferroelectric superlattices using Landau–Khalatnikov equation, and revealed that the characteristics may be affected by layer thickness, interfacial coupling, surface effects etc. However, their model is step‐like structure varying that will lead to the unphysical pictures. Cui et al. have presented a more realistic model to study the dynamic properties http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physica Status Solidi (B) Basic Solid State Physics Wiley

Anomalous Polarization Switching Characteristics in a Ferroelectric Heterostructure

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Publisher
Wiley Subscription Services, Inc., A Wiley Company
Copyright
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
0370-1972
eISSN
1521-3951
D.O.I.
10.1002/pssb.201700371
Publisher site
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Abstract

IntroductionFerroelectric heterostructures or multilayers have attracted enormous interests in recent years for their intriguing physical performance. Experimental results revealed larger polarization, dielectric, tunibility, and antiferroelectriclike hysteresis loop etc. in ferroelectric heterostructures or multibilayers. In view of theoretical analysis, some major factors affecting ferroelectric heterostructures characteristics are regarded as misfit strain, interfacial coupling, inhomogeneous polarization near interface, composition effects, layer thickness, space charge. Thus, lots of researchers established various theoretical models of ferroelectric heterostructures, superlattice structures, or bilayers to investigate the influence of the above factors on the properties of these systems.In the beginning, theorists studied the static properties of these systems using the Landau type theory or transverse Ising model, and obtained some interesting phenomena. In order to approach the realistic applications, some researchers were dedicated to investigating the dynamic characteristics by means of Landau–Devonshire theory combined with Landau–Khalatnikov dynamic equation. Ong et al. have studied the dynamic properties of ferroelectric superlattices using Landau–Khalatnikov equation, and revealed that the characteristics may be affected by layer thickness, interfacial coupling, surface effects etc. However, their model is step‐like structure varying that will lead to the unphysical pictures. Cui et al. have presented a more realistic model to study the dynamic properties

Journal

Physica Status Solidi (B) Basic Solid State PhysicsWiley

Published: Jan 1, 2018

Keywords: ; ;

References

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