Ferroelectric Polarization Dependent Piezoelectric Hardening in BiFeO3‐BaTiO3 Lead‐Free Ceramics

Myang Hwan Lee; Hae In Choi; Da Jeong Kim; Ji Su Kim; Sang Woo Lee; Yubin Park; Sang Mo Yang; Tae Kwon Song

doi:10.1002/aelm.202300902

Advanced Electronic Materials (Sep 2024)

Ferroelectric Polarization Dependent Piezoelectric Hardening in BiFeO3‐BaTiO3 Lead‐Free Ceramics

Myang Hwan Lee,
Hae In Choi,
Da Jeong Kim,
Ji Su Kim,
Sang Woo Lee,
Yubin Park,
Sang Mo Yang,
Tae Kwon Song

Affiliations

Myang Hwan Lee: Department of Materials Convergence and System Engineering School of Materials Science and Engineering Changwon National University Changwon Gyeongnam 51140 South Korea
Hae In Choi: Department of Materials Convergence and System Engineering School of Materials Science and Engineering Changwon National University Changwon Gyeongnam 51140 South Korea
Da Jeong Kim: Department of Materials Convergence and System Engineering School of Materials Science and Engineering Changwon National University Changwon Gyeongnam 51140 South Korea
Ji Su Kim: Department of Materials Convergence and System Engineering School of Materials Science and Engineering Changwon National University Changwon Gyeongnam 51140 South Korea
Sang Woo Lee: Department of Physics Sogang University Seoul 04107 South Korea
Yubin Park: Department of Physics Sogang University Seoul 04107 South Korea
Sang Mo Yang: Department of Physics Sogang University Seoul 04107 South Korea
Tae Kwon Song: Department of Materials Convergence and System Engineering School of Materials Science and Engineering Changwon National University Changwon Gyeongnam 51140 South Korea

DOI: https://doi.org/10.1002/aelm.202300902
Journal volume & issue: Vol. 10, no. 9
pp. n/a – n/a

Abstract

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Abstract The relation between the improvement of mechanical quality factor (Qm) and internal electric field (Ei) generated during the aging process in lead‐free piezoelectric BiFeO3‐BaTiO3 ceramics is investigated for hard piezoelectric application of power transducers. The change of built‐in Ei depends on the ferroelectric polarization (P) direction during the aging process. For the aging process with P parallel to Ei, Qm and Ei increases but Qm and Ei decreases with P antiparallel to Ei. These results are attributed to the migration of defects by depolarization fields and domain‐wall pinning. This work provides the systematic guidance to develop high‐power piezoelectric transducers with lead‐free ceramics.

Published in Advanced Electronic Materials

ISSN: 2199-160X (Online)
Publisher: Wiley-VCH
Country of publisher: Germany
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Electric apparatus and materials. Electric circuits. Electric networks; Science: Physics
Website: https://onlinelibrary.wiley.com/journal/2199160x

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