Pb-free (Ba1−Ca ) (Zr0·18Ti0.82)O3 dielectric tunable ceramics with giant figure-of-merit under low electric field

Xu, Kangli; Yang, Pan; Peng, Wei; Li, Lingxia

doi:10.1016/j.ceramint.2021.03.119

Cited by 8 publications

(1 citation statement)

References 55 publications

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“…The substitution of Ca 2+ into the Ba‐site can be modified to the Ti‐site. Because the ionic radius Ca 2+ (1.06 Å) is between those of the Ba‐site (1.43 Å) and Ti‐site (0.64 Å), 31, 32 it is possible that Ca 2+ is forced into the Ti‐site, thus the volume of the average unit cell changes. These modifications directly impact the BCTZ material's properties and performance and will be discussed in the following sections.…”

Section: Resultsmentioning

confidence: 99%

Porosity effect on the functional properties and energy harvesting performance of Ba_0.85Ca_0.15Ti_0.90Zr_0.10O₃ ceramics

Horchidan,

Curecheriu,

Lukacs

et al. 2023

J Am Ceram Soc.

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In this study, the effect of porosity on the structural and functional (dielectric, ferroelectric, nonlinear, and piezoelectric) properties in Ba0.85Ca0.15Ti0.90Zr0.10O3 ceramics was investigated. Various levels of microporosity in the range of 3% to 31 vol.% have been produced using poly(methyl methacrylate) microspheres as sacrificial templates. The structural investigation indicates a phase coexistence, as expected for this composition at room temperature. The maximum permittivity decreases with increasing porosity, from around 7000 (ceramic with 3 vol.% porosity) down to 3500 (ceramic with 31 vol.% porosity), and the Curie temperature shifts from 47 to 67°C when increasing porosity, related to the possible porosity‐induced structural and internal stress modifications. An enhanced piezoelectric response was found in the Ba0.85Ca0.15Ti0.90Zr0.10O3 ceramic with intermediate porosity around 18 vol.%, with the highest value of piezoelectric response of 470 pC/N and a figure of merit of 7.3 pm2/N. The optimum piezoelectric properties at the intermediate porosity level are related to the microstructural changes (pore shape and connectivity) and possible field‐induced structural modifications. The piezoelectric energy harvesting measurement results have shown the possibility of using Pb‐free porous ferroelectric materials in devices for energy harvesting applications.

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Section: Resultsmentioning

confidence: 99%

Porosity effect on the functional properties and energy harvesting performance of Ba_0.85Ca_0.15Ti_0.90Zr_0.10O₃ ceramics

Horchidan,

Curecheriu,

Lukacs

et al. 2023

J Am Ceram Soc.

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Effects of multiple sintering additives on crystal structure, morphology and tunable mechanisms of BCZT ceramics

Yang,

Zhao,

Shi

et al. 2024

J Mater Sci

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The influence of interface on the dielectric and tunable properties of BCZT/BZT ceramic

Yang,

Zhao,

Shi

et al. 2024

J Mater Sci: Mater Electron

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Pb-free (Ba1−Ca ) (Zr0·18Ti0.82)O3 dielectric tunable ceramics with giant figure-of-merit under low electric field

Cited by 8 publications

References 55 publications

Porosity effect on the functional properties and energy harvesting performance of Ba_0.85Ca_0.15Ti_0.90Zr_0.10O₃ ceramics

Porosity effect on the functional properties and energy harvesting performance of Ba_0.85Ca_0.15Ti_0.90Zr_0.10O₃ ceramics

Effects of multiple sintering additives on crystal structure, morphology and tunable mechanisms of BCZT ceramics

The influence of interface on the dielectric and tunable properties of BCZT/BZT ceramic

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Pb-free (Ba1−Ca ) (Zr0·18Ti0.82)O3 dielectric tunable ceramics with giant figure-of-merit under low electric field

Cited by 8 publications

References 55 publications

Porosity effect on the functional properties and energy harvesting performance of Ba0.85Ca0.15Ti0.90Zr0.10O3 ceramics

Porosity effect on the functional properties and energy harvesting performance of Ba0.85Ca0.15Ti0.90Zr0.10O3 ceramics

Effects of multiple sintering additives on crystal structure, morphology and tunable mechanisms of BCZT ceramics

The influence of interface on the dielectric and tunable properties of BCZT/BZT ceramic

Contact Info

Product

Resources

About

Porosity effect on the functional properties and energy harvesting performance of Ba_0.85Ca_0.15Ti_0.90Zr_0.10O₃ ceramics

Porosity effect on the functional properties and energy harvesting performance of Ba_0.85Ca_0.15Ti_0.90Zr_0.10O₃ ceramics