Morphotropic Phase Boundary Region 0.7BiFeO<sub>3</sub>-0.3BaTiO<sub>3</sub> Ceramics Exploration Under the Influence of the Incorporated Sn-Ions for Piezo/Ferro Applications
In the field of piezoelectric applications, perovskite-based multifunctional composite ceramics are widely explored. The morphotropic phase boundary (MPB) regions, where dual structural phases coexist, play a crucial role in boosting the ferroelectric and piezoelectric properties significantly. Here...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
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| Series: | Crystals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4352/15/1/74 |
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| Summary: | In the field of piezoelectric applications, perovskite-based multifunctional composite ceramics are widely explored. The morphotropic phase boundary (MPB) regions, where dual structural phases coexist, play a crucial role in boosting the ferroelectric and piezoelectric properties significantly. Herein, MPB-region-existent 0.7BiFeO<sub>3</sub>-0.3BaTiO<sub>3</sub> (BFBT) composite ceramic is investigated under the influence of wt%Sn-ion incorporation at the lattice sites of the BFBT. Specifically, the ceramic composition BFBT:0.2Sn has demonstrated excellent remnant polarization (<i>P<sub>r</sub></i> ~ 22.68 µC/cm<sup>2</sup>), an impressive piezoelectric coefficient (<i>d</i><sub>33</sub> ~ 211 pC/N), stable impedance of 1.07 × 10<sup>7</sup> Ω, a Curie temperature of 435 °C and low dielectric loss (tan<i>δ</i>) of <0.5. Moreover, the BFBT:0.2Sn ceramic has also maintained a stable <i>d</i><sub>33</sub> of ~150 pC/N and resistivity of ~10<sup>2</sup> Ω even at a temperature of 400 °C. Such outcomes confirm the ability and potential of the BFBT:0.2Sn ceramic composition for high-temperature piezoelectric applications. |
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| ISSN: | 2073-4352 |