Unveiling the mechanism of substitution-induced high piezoelectric performance in PLZT ceramics
Ferroelectric lead zirconate titanate (PZT, PbZr1−xTixO3) dominates the piezoelectric ceramic market because of its high piezoelectric coefficient, high thermal stability and low processing cost. Doping of PZT with lanthanum has been widely used to develop advanced piezoelectric ceramics with improv...
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| Format: | Article |
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Tsinghua University Press
2025-07-01
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| Series: | Journal of Advanced Ceramics |
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| Online Access: | https://www.sciopen.com/article/10.26599/JAC.2025.9221097 |
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| author | Ciaran Joseph O’Malley Xuyao Tang Vladimir Koval Kan Chen Zixuan Wu Krishnarjun Banerjee Wanting Hu Haixue Yan |
| author_facet | Ciaran Joseph O’Malley Xuyao Tang Vladimir Koval Kan Chen Zixuan Wu Krishnarjun Banerjee Wanting Hu Haixue Yan |
| author_sort | Ciaran Joseph O’Malley |
| collection | DOAJ |
| description | Ferroelectric lead zirconate titanate (PZT, PbZr1−xTixO3) dominates the piezoelectric ceramic market because of its high piezoelectric coefficient, high thermal stability and low processing cost. Doping of PZT with lanthanum has been widely used to develop advanced piezoelectric ceramics with improved piezoelectric properties. However, the effects of La doping are ambiguous in the literature, and associated mechanisms are unclear. Here, we prepared La-doped PZT (PLZT) ceramics with different concentrations of La by the conventional solid-state reaction method. The PLZT ceramics have a perovskite structure, where tetragonal (P4mm) and monoclinic (C1m1) phases coexist. Upon La doping, the Curie point (Tc), ferroelectric lattice distortion, and concentration of oxygen vacancies decrease. Under an applied electric field, both domain switching and field-induced transition are observed. The remnant polarization (Pr) of the doped PLZT ceramics is greater than that of the starting PZT ceramics, and the increased Pr is attributed to the substitution of reduced oxygen vacancies. With increasing temperature, the piezoelectric coefficient (d33) of the La-doped ceramics increases due to the increase in permittivity. The prevailing effect of high permittivity is related to the high d33 value (~375 pC/N) of the x = 0.5 ceramics. These findings reveal the mechanisms associated with La doping in PZT ceramics, thereby providing a viable approach for developing advanced piezoelectric ceramics with high piezoelectric performance. |
| format | Article |
| id | doaj-art-61bf3aa7ea62481cbc6e41fe3fdad3af |
| institution | Kabale University |
| issn | 2226-4108 2227-8508 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj-art-61bf3aa7ea62481cbc6e41fe3fdad3af2025-08-20T03:40:14ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082025-07-01147922109710.26599/JAC.2025.9221097Unveiling the mechanism of substitution-induced high piezoelectric performance in PLZT ceramicsCiaran Joseph O’Malley0Xuyao Tang1Vladimir Koval2Kan Chen3Zixuan Wu4Krishnarjun Banerjee5Wanting Hu6Haixue Yan7School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UKSchool of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UKInstitute of Materials Research, Slovak Academy of Sciences, Kosice 040 01, SlovakiaSchool of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UKSchool of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UKSchool of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UKSchool of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UKSchool of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UKFerroelectric lead zirconate titanate (PZT, PbZr1−xTixO3) dominates the piezoelectric ceramic market because of its high piezoelectric coefficient, high thermal stability and low processing cost. Doping of PZT with lanthanum has been widely used to develop advanced piezoelectric ceramics with improved piezoelectric properties. However, the effects of La doping are ambiguous in the literature, and associated mechanisms are unclear. Here, we prepared La-doped PZT (PLZT) ceramics with different concentrations of La by the conventional solid-state reaction method. The PLZT ceramics have a perovskite structure, where tetragonal (P4mm) and monoclinic (C1m1) phases coexist. Upon La doping, the Curie point (Tc), ferroelectric lattice distortion, and concentration of oxygen vacancies decrease. Under an applied electric field, both domain switching and field-induced transition are observed. The remnant polarization (Pr) of the doped PLZT ceramics is greater than that of the starting PZT ceramics, and the increased Pr is attributed to the substitution of reduced oxygen vacancies. With increasing temperature, the piezoelectric coefficient (d33) of the La-doped ceramics increases due to the increase in permittivity. The prevailing effect of high permittivity is related to the high d33 value (~375 pC/N) of the x = 0.5 ceramics. These findings reveal the mechanisms associated with La doping in PZT ceramics, thereby providing a viable approach for developing advanced piezoelectric ceramics with high piezoelectric performance.https://www.sciopen.com/article/10.26599/JAC.2025.9221097lead zirconate titanate (pzt, pbzr1−xtixo3)lanthanum dopingpiezoelectricitydomain switching |
| spellingShingle | Ciaran Joseph O’Malley Xuyao Tang Vladimir Koval Kan Chen Zixuan Wu Krishnarjun Banerjee Wanting Hu Haixue Yan Unveiling the mechanism of substitution-induced high piezoelectric performance in PLZT ceramics Journal of Advanced Ceramics lead zirconate titanate (pzt, pbzr1−xtixo3) lanthanum doping piezoelectricity domain switching |
| title | Unveiling the mechanism of substitution-induced high piezoelectric performance in PLZT ceramics |
| title_full | Unveiling the mechanism of substitution-induced high piezoelectric performance in PLZT ceramics |
| title_fullStr | Unveiling the mechanism of substitution-induced high piezoelectric performance in PLZT ceramics |
| title_full_unstemmed | Unveiling the mechanism of substitution-induced high piezoelectric performance in PLZT ceramics |
| title_short | Unveiling the mechanism of substitution-induced high piezoelectric performance in PLZT ceramics |
| title_sort | unveiling the mechanism of substitution induced high piezoelectric performance in plzt ceramics |
| topic | lead zirconate titanate (pzt, pbzr1−xtixo3) lanthanum doping piezoelectricity domain switching |
| url | https://www.sciopen.com/article/10.26599/JAC.2025.9221097 |
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