Composition driven (Ba,Ca)(Zr,Ti)O3 lead-free ceramics with large quality factor and energy harvesting characteristics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24510%2F21%3A00009320" target="_blank" >RIV/46747885:24510/21:00009320 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26620/21:PU139446

Výsledek na webu

<a href="https://doi.org/10.1111/jace.17497" target="_blank" >https://doi.org/10.1111/jace.17497</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jace.17497" target="_blank" >10.1111/jace.17497</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Composition driven (Ba,Ca)(Zr,Ti)O3 lead-free ceramics with large quality factor and energy harvesting characteristics

Popis výsledku v původním jazyce

A comprehensive study on energy harvesting characteristics as well as electro-mechanical properties of lead-free (1−x)(BaZr0.2Ti0.8)O3—x(Ba0.7Ca0.3Ti)O3 ceramics were systematically carried out. Raman and Rietveld analyses show a formation of rhombohedral-orthorhombic-tetragonal (R-O-T) phase boundary region between 4/6 BZT/BCT and 6/4 BZT/BCT compositional range. Raman modes shift toward lower frequencies with increased Zr/Ca stoichiometric ratio attributed to asymmetric Ti-O phonon vibrations, which caused local disorder, widening of energy band and reduced Curie temperature. The large mechanical quality factor Qm = 556 is related to the hardening effect and significantly high energy conversion efficiency η = 96% was discovered for 3/7 BZT/BCT composition. Largely, the noblest electro-mechanical properties were retrieved for 5/5 BZT/BCT ceramics, in which d33 = 500 pC/N (from quasi-static d33 meter), d33 = 540 pm/V (from field-dependent d33 curves) indicating that the both methods are analogous with a deviation of 8%. The outstanding energy harvesting characteristics such as voltage constant g33 = 27 × 10−3 Vm/N, transduction coefficient d33 × g33 = 13 301 × 10−15 m2/N, figure of merit under off-resonance conditions FOMoff = 12.1 × 10−10 m2/N and fairly large η of 94% were attained again for 5/5 BZT/BCT ceramics. These outstanding characteristics were ascribed to the R-O-T phase boundary region that comprises a low energy barrier, consequently facilitated easy polarization rotation and triggered an increased electro-mechanical conversion. These characteristics outperform other lead-free and even most commercially available lead-based ceramics, and thus suitable for sensors, actuators, resonators, and energy harvesting applications.

Název v anglickém jazyce

Composition driven (Ba,Ca)(Zr,Ti)O3 lead-free ceramics with large quality factor and energy harvesting characteristics

Popis výsledku anglicky

A comprehensive study on energy harvesting characteristics as well as electro-mechanical properties of lead-free (1−x)(BaZr0.2Ti0.8)O3—x(Ba0.7Ca0.3Ti)O3 ceramics were systematically carried out. Raman and Rietveld analyses show a formation of rhombohedral-orthorhombic-tetragonal (R-O-T) phase boundary region between 4/6 BZT/BCT and 6/4 BZT/BCT compositional range. Raman modes shift toward lower frequencies with increased Zr/Ca stoichiometric ratio attributed to asymmetric Ti-O phonon vibrations, which caused local disorder, widening of energy band and reduced Curie temperature. The large mechanical quality factor Qm = 556 is related to the hardening effect and significantly high energy conversion efficiency η = 96% was discovered for 3/7 BZT/BCT composition. Largely, the noblest electro-mechanical properties were retrieved for 5/5 BZT/BCT ceramics, in which d33 = 500 pC/N (from quasi-static d33 meter), d33 = 540 pm/V (from field-dependent d33 curves) indicating that the both methods are analogous with a deviation of 8%. The outstanding energy harvesting characteristics such as voltage constant g33 = 27 × 10−3 Vm/N, transduction coefficient d33 × g33 = 13 301 × 10−15 m2/N, figure of merit under off-resonance conditions FOMoff = 12.1 × 10−10 m2/N and fairly large η of 94% were attained again for 5/5 BZT/BCT ceramics. These outstanding characteristics were ascribed to the R-O-T phase boundary region that comprises a low energy barrier, consequently facilitated easy polarization rotation and triggered an increased electro-mechanical conversion. These characteristics outperform other lead-free and even most commercially available lead-based ceramics, and thus suitable for sensors, actuators, resonators, and energy harvesting applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/GA18-20498S" target="_blank" >GA18-20498S: Řízení mikrostruktury a vlastností bezolovnatých piezokeramických materiálů pomocí pokročilých technologií jejich přípravy</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of the American Ceramic Society

ISSN

0002-7820

e-ISSN

—

Svazek periodika

104

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

1088-1101

Kód UT WoS článku

000577697500001

EID výsledku v databázi Scopus

2-s2.0-85092505357