Pinning and bending of domain walls in perovskites(Ferroelectrics Workshop 2014)

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Pinning and bending of domain walls in perovskites(Ferroelectrics Workshop 2014)

Popis výsledku v původním jazyce

Předneseno na:Ferroelectrics Workshop 2014;23-26.03.2014;Leysin,Switzerland It is known that domain movements greatly contribute to macroscopic permittivity and piezoelectric coefficients of polydomain ferroelectric samples. In the bulk of the ferroelectric material, the movements of ferroelectric domain walls are influenced by interactions of domain walls with crystal lattice defects. The domain wall?defect interaction results in pinning and bending of domain walls. Since the knowledge about two aforementioned processes is still rather limited, we approached to the theoretical analysis of the system, where a single domain wall interacts with an anisotropic distribution of crystal lattice defects. The analysis has been performed using a general thermodynamic model.The model is based on the Landau-Ginzburg-Devonshire theory.The interaction of the domain walls with the crystal lattice defect has been introduced using an additional term in the free energy of the system.The model has

Název v anglickém jazyce

Pinning and bending of domain walls in perovskites(Ferroelectrics Workshop 2014)

Popis výsledku anglicky

Předneseno na:Ferroelectrics Workshop 2014;23-26.03.2014;Leysin,Switzerland It is known that domain movements greatly contribute to macroscopic permittivity and piezoelectric coefficients of polydomain ferroelectric samples. In the bulk of the ferroelectric material, the movements of ferroelectric domain walls are influenced by interactions of domain walls with crystal lattice defects. The domain wall?defect interaction results in pinning and bending of domain walls. Since the knowledge about two aforementioned processes is still rather limited, we approached to the theoretical analysis of the system, where a single domain wall interacts with an anisotropic distribution of crystal lattice defects. The analysis has been performed using a general thermodynamic model.The model is based on the Landau-Ginzburg-Devonshire theory.The interaction of the domain walls with the crystal lattice defect has been introduced using an additional term in the free energy of the system.The model has

Druh

O - Ostatní výsledky

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů