Pinning and bending of domain walls in lead titanate

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F13%3A%230002433" target="_blank" >RIV/46747885:24220/13:#0002433 - isvavai.cz</a>

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 lead titanate

Popis výsledku v původním jazyce

It is known that domain wall motion greatly contributes to macroscopic permittivity and piezoelectric coefficients of polydomain ferroelectric samples. In the bulk of a ferroelectric material, the domain wall mobility is restricted by interactions of domain walls with crystal lattice defects. It is believed that crystal lattice defects cause pinning and bending of domain walls. Since understanding the two aforementioned phenomena is still rather limited, we theoretically analyze the system, where a segment of a domain wall interacts with a crystal lattice defect. The analysis has been performed using a general thermodynamic model based on the Landau-Ginzburg-Devonshire theory. The interaction of domain walls with crystal lattice defects has been introduced using an additional term in the free energy of the system. The model has been solved using numerical phase-field simulations and the results were compared with analytical solution of simplified domain-wall-bending model presented ear

Název v anglickém jazyce

Pinning and bending of domain walls in lead titanate

Popis výsledku anglicky

It is known that domain wall motion greatly contributes to macroscopic permittivity and piezoelectric coefficients of polydomain ferroelectric samples. In the bulk of a ferroelectric material, the domain wall mobility is restricted by interactions of domain walls with crystal lattice defects. It is believed that crystal lattice defects cause pinning and bending of domain walls. Since understanding the two aforementioned phenomena is still rather limited, we theoretically analyze the system, where a segment of a domain wall interacts with a crystal lattice defect. The analysis has been performed using a general thermodynamic model based on the Landau-Ginzburg-Devonshire theory. The interaction of domain walls with crystal lattice defects has been introduced using an additional term in the free energy of the system. The model has been solved using numerical phase-field simulations and the results were compared with analytical solution of simplified domain-wall-bending model presented ear

Druh

A - Audiovizuální tvorba

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GAP204%2F10%2F0616" target="_blank" >GAP204/10/0616: Moderní pizeoelektrické perovskity: kmity krystalové mřížky a doménové stěny</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

ISBN

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Místo vydání

Krakow, Poland

Název nakladatele resp. objednatele

The Institute of Physics Jagiellonian University, Kraków, Poland

Verze

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Identifikační číslo nosiče

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