Composition driven (Ba,Ca)(Zr,Ti)O(3)lead-free ceramics with large quality factor and energy harvesting characteristics
The result's identifiers
Result code in 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>
Alternative codes found
RIV/46747885:24510/21:00009320
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Composition driven (Ba,Ca)(Zr,Ti)O(3)lead-free ceramics with large quality factor and energy harvesting characteristics
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20504 - Ceramics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of the American Ceramic Society
ISSN
0002-7820
e-ISSN
1551-2916
Volume of the periodical
104
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
14
Pages from-to
1088-1101
UT code for WoS article
000577697500001
EID of the result in the Scopus database
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