Dependence of the ferroelectric domain shape on the electric field of the microscope tip

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F15%3APU136147" target="_blank" >RIV/00216305:26220/15:PU136147 - isvavai.cz</a>

Výsledek na webu

<a href="https://aip.scitation.org/doi/full/10.1063/1.4927800" target="_blank" >https://aip.scitation.org/doi/full/10.1063/1.4927800</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4927800" target="_blank" >10.1063/1.4927800</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dependence of the ferroelectric domain shape on the electric field of the microscope tip

Popis výsledku v původním jazyce

A theory of an equilibrium shape of the domain formed in an electric field of a scanning force microscope (SFM) tip is proposed. We do not assume a priori that the domain has a fixed form. The shape of the domain is defined by the minimum of the free energy of the ferroelectric. This energy includes the energy of the depolarization field, the energy of the domain wall, and the energy of the interaction between the domain and the electric field of the SFM tip. The contributions of the apex and conical part of the tip are examined. Moreover, in the proposed approach, any narrow tip can be considered. The surface energy is determined on the basis of the Ginzburg-Landau-Devonshire theory and takes into account the curvature of the domain wall. The variation of the free energy with respect to the domain shape leads to an integro-differential equation, which must be solved numerically. Model results are illustrated for lithium tantalate ceramics. (C) 2015 AIP Publishing LLC.

Název v anglickém jazyce

Dependence of the ferroelectric domain shape on the electric field of the microscope tip

Popis výsledku anglicky

A theory of an equilibrium shape of the domain formed in an electric field of a scanning force microscope (SFM) tip is proposed. We do not assume a priori that the domain has a fixed form. The shape of the domain is defined by the minimum of the free energy of the ferroelectric. This energy includes the energy of the depolarization field, the energy of the domain wall, and the energy of the interaction between the domain and the electric field of the SFM tip. The contributions of the apex and conical part of the tip are examined. Moreover, in the proposed approach, any narrow tip can be considered. The surface energy is determined on the basis of the Ginzburg-Landau-Devonshire theory and takes into account the curvature of the domain wall. The variation of the free energy with respect to the domain shape leads to an integro-differential equation, which must be solved numerically. Model results are illustrated for lithium tantalate ceramics. (C) 2015 AIP Publishing LLC.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/LO1401" target="_blank" >LO1401: Interdisciplinární výzkum bezdrátových technologií</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Journal of Aplied Physics

ISSN

0021-8979

e-ISSN

1089-7550

Svazek periodika

118

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

1-7

Kód UT WoS článku

000360441900011

EID výsledku v databázi Scopus

2-s2.0-84939825189