A facile strategy for concurrently promoting piezoelectric properties and thermal depolarization in unmodified BNT–BT piezoceramics: reasonable sintering temperature to regulate oxygen vacancy

Yu, Dongyan; Zhou, Changrong; Wei, Quanfeng; Rao, Guanghui; Li, Lin; Li, Qingning; Yuan, Changlai; Xu, Jiwen

doi:10.1007/s10854-023-09871-0

Cited by 5 publications

(1 citation statement)

References 47 publications

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“…In the past, various strategies have been employed to improve the piezoelectric properties, including lattice contribution enhancement, domain reconstruction, morphotropic phase boundary (MPB) engineering, and defect control. ,− Among these, MPB engineering has achieved significant breakthroughs and established itself as an important research strategy. In particular, PZT exhibits excellent piezoelectric properties near the MPB composition, where the PbTiO 3 -rich tetragonal and PbZrO 3 -rich rhombohedral exist in approximately equal proportions.…”

Section: Introductionmentioning

confidence: 99%

Achieving High Piezoelectric Performance across a Wide Composition Range in Tetragonal (Bi,Na)TiO₃–BaTiO₃ Films for Micro-electromechanical Systems

Ishihama,

Shimizu,

Okamoto

et al. 2023

ACS Appl. Mater. Interfaces

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Tetragonal (1−x)(Bi,Na)TiO 3 −xBaTiO 3 films exhibit enhanced piezoelectric properties due to domain switching over a wide composition range. These properties were observed over a significantly wider composition range than the morphotropic phase boundary (MPB), which typically has a limited composition range of 1−2%. The polarization axis was found to be along the in-plane direction for the tetragonal composition range x = 0.06−1.0, attributed to the tensile thermal strain from the substrate during cooling after the film formation. A "two-step increase" in remanent polarization against an applied maximum electric field was observed at the high-field region due to the domain switching, and a very high piezoelectric response (effective d 33 value, denoted as d 33,f ) over 220 pm/V was achieved for a wide composition range of x = 0.2−0.5 with high tetragonality, exceeding previously reported values for bulk ceramics. Moreover, a transverse piezoelectric coefficient, e 31,f , of 19 C/m 2 measured using a cantilever structure was obtained for a composition range of at least 10 atom % (for both x = 0.2 and 0.3). This value is the highest reported for Pb-free piezoelectric thin films and is comparable to the best data for Pb-based thin films. Reversible domain switching eliminates the need for conventional MPB compositions, allowing an improvement in the piezoelectric properties over a wider composition range. This strategy could provide a guideline for the development of environmentally acceptable lead-free piezoelectric films with composition-insensitive piezoelectric performance to replace Pb-based materials with MPB composition, such as PZT.

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Section: Introductionmentioning

confidence: 99%

Achieving High Piezoelectric Performance across a Wide Composition Range in Tetragonal (Bi,Na)TiO₃–BaTiO₃ Films for Micro-electromechanical Systems

Ishihama,

Shimizu,

Okamoto

et al. 2023

ACS Appl. Mater. Interfaces

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Large electrostriction-like strain by tailoring relaxor degree in BNT-based ceramics

Yu,

Zhou,

Chen

et al. 2023

J Mater Sci: Mater Electron

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Synergy of morphotropic phase boundary and internal bias fields to achieve high d33 and d33* simultaneously in lead-free BNT-based ceramics

Yu,

Zhou,

Chen

et al. 2023

Ceramics International

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A facile strategy for concurrently promoting piezoelectric properties and thermal depolarization in unmodified BNT–BT piezoceramics: reasonable sintering temperature to regulate oxygen vacancy

Cited by 5 publications

References 47 publications

Achieving High Piezoelectric Performance across a Wide Composition Range in Tetragonal (Bi,Na)TiO₃–BaTiO₃ Films for Micro-electromechanical Systems

Achieving High Piezoelectric Performance across a Wide Composition Range in Tetragonal (Bi,Na)TiO₃–BaTiO₃ Films for Micro-electromechanical Systems

Large electrostriction-like strain by tailoring relaxor degree in BNT-based ceramics

Synergy of morphotropic phase boundary and internal bias fields to achieve high d33 and d33* simultaneously in lead-free BNT-based ceramics

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A facile strategy for concurrently promoting piezoelectric properties and thermal depolarization in unmodified BNT–BT piezoceramics: reasonable sintering temperature to regulate oxygen vacancy

Cited by 5 publications

References 47 publications

Achieving High Piezoelectric Performance across a Wide Composition Range in Tetragonal (Bi,Na)TiO3–BaTiO3 Films for Micro-electromechanical Systems

Achieving High Piezoelectric Performance across a Wide Composition Range in Tetragonal (Bi,Na)TiO3–BaTiO3 Films for Micro-electromechanical Systems

Large electrostriction-like strain by tailoring relaxor degree in BNT-based ceramics

Synergy of morphotropic phase boundary and internal bias fields to achieve high d33 and d33* simultaneously in lead-free BNT-based ceramics

Contact Info

Product

Resources

About

Achieving High Piezoelectric Performance across a Wide Composition Range in Tetragonal (Bi,Na)TiO₃–BaTiO₃ Films for Micro-electromechanical Systems

Achieving High Piezoelectric Performance across a Wide Composition Range in Tetragonal (Bi,Na)TiO₃–BaTiO₃ Films for Micro-electromechanical Systems