Composition driven (Ba,Ca)(Zr,Ti)O(3)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%2F00216305%3A26620%2F21%3APU139446" target="_blank" >RIV/00216305:26620/21:PU139446 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46747885:24510/21:00009320

Výsledek na webu

<a href="https://ceramics.onlinelibrary.wiley.com/doi/10.1111/jace.17497" target="_blank" >https://ceramics.onlinelibrary.wiley.com/doi/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)O(3)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)O-3-x(Ba0.7Ca0.3Ti)O(3)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 factorQ(m) = 556 is related to the hardening effect and significantly high energy conversion efficiency eta = 96% was discovered for 3/7 BZT/BCT composition. Largely, the noblest electro-mechanical properties were retrieved for 5/5 BZT/BCT ceramics, in whichd(33) = 500 pC/N (from quasi-staticd(33)meter),d(33) = 540 pm/V (from field-dependent d(33)curves) indicating that the both methods are analogous with a deviation of 8%. The outstanding energy harvesting characteristics such as voltage constantg(33) = 27 x 10(-3) Vm/N, transduction coefficientd(33) x g(33) = 13 301 x 10(-15) m(2)/N, figure of merit under off-resonance conditions FOMoff = 12.1 x 10(-10) m(2)/N and fairly large eta 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)O(3)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)O-3-x(Ba0.7Ca0.3Ti)O(3)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 factorQ(m) = 556 is related to the hardening effect and significantly high energy conversion efficiency eta = 96% was discovered for 3/7 BZT/BCT composition. Largely, the noblest electro-mechanical properties were retrieved for 5/5 BZT/BCT ceramics, in whichd(33) = 500 pC/N (from quasi-staticd(33)meter),d(33) = 540 pm/V (from field-dependent d(33)curves) indicating that the both methods are analogous with a deviation of 8%. The outstanding energy harvesting characteristics such as voltage constantg(33) = 27 x 10(-3) Vm/N, transduction coefficientd(33) x g(33) = 13 301 x 10(-15) m(2)/N, figure of merit under off-resonance conditions FOMoff = 12.1 x 10(-10) m(2)/N and fairly large eta 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

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

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

1551-2916

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

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