Enhanced piezoelectric properties in BF-BT based lead-free ferroelectric ceramics for high-temperature devices

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F23%3APU148081" target="_blank" >RIV/00216305:26620/23:PU148081 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0272884222033235?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0272884222033235?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceramint.2022.09.145" target="_blank" >10.1016/j.ceramint.2022.09.145</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhanced piezoelectric properties in BF-BT based lead-free ferroelectric ceramics for high-temperature devices

Popis výsledku v původním jazyce

Due to the high Curie temperature (T-C), BiFeO3-BaTiO3 (BF-BT) ceramics have been broadly investigated in high-temperature piezoelectric devices. The piezoelectric constant is one of the most significant factors in determining the sensitivity and reliability of piezoelectric functional components. However, the poor piezoelectric constant (d(33)) of BF-BT ceramic has prevented the practical application of the material. In this work, we innovatively introduce the 0.93Bi(0.5)Na(0.5)TiO(3)-0.07BaTiO(3) (0.93NBT-0.07BT) component to 0.7BF-0.3BT ceramic, to build a morphotropic phase boundary (MPB) for enhancing d(33). The XRD analysis shows that the (0.7BF-0.3BT)-x(0.93NBT-0.07BT) ceramics are still in the MPB region with R-PC phases coexistence, and exhibits a homogeneous solid solution. Moreover, the introduction of 0.93NBT-0.07BT ceramic suppresses the generation of defects and facilitates grain growth, thus enhancing piezoelectric property. In consequence, an optimum piezoelectricity d(33) = 213 pC/N along with T-c similar to 450 degrees C was obtained in (0.7BF-0.3BT)-0.01(0.93NBT0.07BT). This research provides a new idea for the application of BF-BT ceramics in high-temperature piezoelectric devices.

Název v anglickém jazyce

Enhanced piezoelectric properties in BF-BT based lead-free ferroelectric ceramics for high-temperature devices

Popis výsledku anglicky

Due to the high Curie temperature (T-C), BiFeO3-BaTiO3 (BF-BT) ceramics have been broadly investigated in high-temperature piezoelectric devices. The piezoelectric constant is one of the most significant factors in determining the sensitivity and reliability of piezoelectric functional components. However, the poor piezoelectric constant (d(33)) of BF-BT ceramic has prevented the practical application of the material. In this work, we innovatively introduce the 0.93Bi(0.5)Na(0.5)TiO(3)-0.07BaTiO(3) (0.93NBT-0.07BT) component to 0.7BF-0.3BT ceramic, to build a morphotropic phase boundary (MPB) for enhancing d(33). The XRD analysis shows that the (0.7BF-0.3BT)-x(0.93NBT-0.07BT) ceramics are still in the MPB region with R-PC phases coexistence, and exhibits a homogeneous solid solution. Moreover, the introduction of 0.93NBT-0.07BT ceramic suppresses the generation of defects and facilitates grain growth, thus enhancing piezoelectric property. In consequence, an optimum piezoelectricity d(33) = 213 pC/N along with T-c similar to 450 degrees C was obtained in (0.7BF-0.3BT)-0.01(0.93NBT0.07BT). This research provides a new idea for the application of BF-BT ceramics in high-temperature piezoelectric devices.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

CERAMICS INTERNATIONAL

ISSN

0272-8842

e-ISSN

1873-3956

Svazek periodika

49

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

1820-1825

Kód UT WoS článku

000905046800001

EID výsledku v databázi Scopus

2-s2.0-85139224295