Vliv eletrického pole na rychlost ultrazvuku v PZT keramikách

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24510%2F08%3A%230000114" target="_blank" >RIV/46747885:24510/08:#0000114 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of electric field on the ultrasound velocity in PZT ceramics

Popis výsledku v původním jazyce

The ultrasonic velocities were measured on commercial types of PZT ceramics as APC841, APC850, and APC856, at room temperature. The comparison of the ultrasound velocities dependence on electric bias filed was made for poled/unpoled soft ceramics. The ultrasonics pulse-echo technique was used in our experiment. The high bias filed was applied on disk samples by the high voltage amplifier type Trek 610D, using a special setup and sample holder. The sound velocity was found to change drastically near thecoercive filed for a PZT ceramics, where the velocity of longitudinal waves decreases with an increasing filed while the velocity of shear waves increases, which is caused by the change of the elastic anisotropy under influence of the depolariziation filed. The consequent change of the piezoelectric contribution to effective elastic constant decreases the velocity of longitudinal waves and at the same time increases the velocity of shear waves around the coercitive field.

Název v anglickém jazyce

Influence of electric field on the ultrasound velocity in PZT ceramics

Popis výsledku anglicky

The ultrasonic velocities were measured on commercial types of PZT ceramics as APC841, APC850, and APC856, at room temperature. The comparison of the ultrasound velocities dependence on electric bias filed was made for poled/unpoled soft ceramics. The ultrasonics pulse-echo technique was used in our experiment. The high bias filed was applied on disk samples by the high voltage amplifier type Trek 610D, using a special setup and sample holder. The sound velocity was found to change drastically near thecoercive filed for a PZT ceramics, where the velocity of longitudinal waves decreases with an increasing filed while the velocity of shear waves increases, which is caused by the change of the elastic anisotropy under influence of the depolariziation filed. The consequent change of the piezoelectric contribution to effective elastic constant decreases the velocity of longitudinal waves and at the same time increases the velocity of shear waves around the coercitive field.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

<a href="/cs/project/GA202%2F07%2F1289" target="_blank" >GA202/07/1289: Elektromechanické vlastnosti pokročilých feroelektrických materiálů</a><br>

Návaznosti

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

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název periodika

Journal of Electroceramics

ISSN

1385-3449

e-ISSN

—

Svazek periodika

neuvedeno

Číslo periodika v rámci svazku

20

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

—

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—