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| Description
| - It is known that the both dielectric and piezoelectric properties of polydomain perovskite ceramics and single crystals are to a large extent influenced by the presence of domain walls. For that reason, the effects of domain phenomena on the dielectric and piezoelectric properties of perovskite ferroelectrics have been comprehensively investigated for several decades. Many experimental observations of nonlinear polarization and strain responses to the applied electric field match the so-called Rayleigh law. It indicates that macroscopic properties of the material are influenced by the domain wall motions, which are controlled by the interaction of the domain walls with crystal lattice defects. On the other hand, several observations of strong piezoelectric response of domain engineered samples, where the driving force for the domain wall movement was absent, has been reported recently. Such experimental results indicated the existence of different physical phenomena which control the macroscopic dielectric and piezoelectric response in perovskite materials take place. In this work, we review the classical models that explain the effects of domain walls on macroscopic properties of ferroelectric materials. The classical models will be compared with the latest experimental investigations and recent developments in modeling the polydomain ferroelectric samples. Using the method of phase field simulation, we address the problems of pinning of domain walls with random bonds and random fields, bending of the domain walls, reversibility and irreversibility of domain wall motion, the role of neutral and charged domain walls, the role of semiconductor nature of ferroelectric materials, etc.
- It is known that the both dielectric and piezoelectric properties of polydomain perovskite ceramics and single crystals are to a large extent influenced by the presence of domain walls. For that reason, the effects of domain phenomena on the dielectric and piezoelectric properties of perovskite ferroelectrics have been comprehensively investigated for several decades. Many experimental observations of nonlinear polarization and strain responses to the applied electric field match the so-called Rayleigh law. It indicates that macroscopic properties of the material are influenced by the domain wall motions, which are controlled by the interaction of the domain walls with crystal lattice defects. On the other hand, several observations of strong piezoelectric response of domain engineered samples, where the driving force for the domain wall movement was absent, has been reported recently. Such experimental results indicated the existence of different physical phenomena which control the macroscopic dielectric and piezoelectric response in perovskite materials take place. In this work, we review the classical models that explain the effects of domain walls on macroscopic properties of ferroelectric materials. The classical models will be compared with the latest experimental investigations and recent developments in modeling the polydomain ferroelectric samples. Using the method of phase field simulation, we address the problems of pinning of domain walls with random bonds and random fields, bending of the domain walls, reversibility and irreversibility of domain wall motion, the role of neutral and charged domain walls, the role of semiconductor nature of ferroelectric materials, etc. (en)
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| Title
| - Role of Domain Walls on Macroscopic Properties of Perovskite Ceramics
- Role of Domain Walls on Macroscopic Properties of Perovskite Ceramics (en)
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| skos:prefLabel
| - Role of Domain Walls on Macroscopic Properties of Perovskite Ceramics
- Role of Domain Walls on Macroscopic Properties of Perovskite Ceramics (en)
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| skos:notation
| - RIV/46747885:24220/12:#0002169!RIV13-GA0-24220___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/46747885:24220/12:#0002169
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - ferroelectric domain wall; pinning center; crystal lattice defect; macroscopic permittivity; phase field model simulations; extrinsic permittivity (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...i/riv/kodPristupu
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...n/vavai/riv/nosic
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| http://linked.open...telVyzkumneZpravy
| - Universiti Sains Malaysia, Penang, Malaysia
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Mokrý, Pavel
- Sluka, Tomáš
- Tagantsev, Alexander K.
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| http://localhost/t...ganizacniJednotka
| |
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