Nonlinear extrinsic piezoelectricity in lead titanate due to 90° domain wall pinning

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

Nonlinear extrinsic piezoelectricity in lead titanate due to 90° domain wall pinning

Popis výsledku v původním jazyce

Group of perovskite materials is still playing the essential role in a construction of contemporary electromechanical transducers. An increased number of regulations concerning the use of hazardous substances has triggered a vivid search for equally wellperforming piezoelectric materials but without the toxic lead. One of the possibilities to increase the piezoelectric response of lead-free piezoelectric perovskites is to employ so called extrinsic contributions (i.e. motion of ferroelastic domain walls) to piezoelectricity in some controlled manner. The key factor which controls the macroscopic value of the extrinsic contributions to piezoelectricity is the restoring force acting on a domain wall, when it is shifted from its equilibrium position. Considering the bulk properties of perovskites, the main contribution to the restoring force comes from the interaction of domain walls with so called pinning centers such as crystal lattice point defects or dislocations. We have developed a

Název v anglickém jazyce

Nonlinear extrinsic piezoelectricity in lead titanate due to 90° domain wall pinning

Popis výsledku anglicky

Group of perovskite materials is still playing the essential role in a construction of contemporary electromechanical transducers. An increased number of regulations concerning the use of hazardous substances has triggered a vivid search for equally wellperforming piezoelectric materials but without the toxic lead. One of the possibilities to increase the piezoelectric response of lead-free piezoelectric perovskites is to employ so called extrinsic contributions (i.e. motion of ferroelastic domain walls) to piezoelectricity in some controlled manner. The key factor which controls the macroscopic value of the extrinsic contributions to piezoelectricity is the restoring force acting on a domain wall, when it is shifted from its equilibrium position. Considering the bulk properties of perovskites, the main contribution to the restoring force comes from the interaction of domain walls with so called pinning centers such as crystal lattice point defects or dislocations. We have developed a

Druh

A - Audiovizuální tvorba

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

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

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

State College, PA, USA

Název nakladatele resp. objednatele

The Pennsylvania State University Materials Research Institute N228 Millennium Science Complex University Park, PA 16802 USA

Verze

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Identifikační číslo nosiče

CD-IWATMD-2013