Effect of lithium carbonate on the sintering, microstructure, and functional properties of sol-gel-derived Ba0.85Ca0.15Zr0.1Ti0.9O3 piezoceramics

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F21%3APU140435" target="_blank" >RIV/00216305:26620/21:PU140435 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1557/s43578-020-00065-6" target="_blank" >https://link.springer.com/article/10.1557/s43578-020-00065-6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1557/s43578-020-00065-6" target="_blank" >10.1557/s43578-020-00065-6</a>

Result language
angličtina
Original language name
Effect of lithium carbonate on the sintering, microstructure, and functional properties of sol-gel-derived Ba0.85Ca0.15Zr0.1Ti0.9O3 piezoceramics
Original language description
Piezoelectric Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) has been found to be a competitive lead-free piezoceramic candidate and was prepared by a sol-gel technique due to its small particle size and homogeneous particle size distribution, but the sintering temperature is still quite high in the previous reports. In the present paper, lithium carbonate (Li2CO3) was used as a sintering aid and dopant for the sol-gel-derived piezoceramic powder, to facilitate the sintering process and adjust the densification, the microstructures and functional properties. With the addition of 0.5 wt% Li2CO3 sintered at 1300 degrees C, a high relative density 96% with piezoelectric coefficient d(33) similar to 447 pC/N, planar coupling coefficient k(p) similar to 0.51, and Curie point T-C similar to 98.7 degrees C was obtained. The way to properly define the critical changing points on temperature-dependent dielectric curves were further discussed. By altering sintering temperature and the amount of dopant, the mutual influence between the microstructures and the functional properties was explained, to further guide shaping BCZT in more complexed connectivities.
Czech name
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Czech description
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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

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)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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