Extrinsic contributions to piezoelectric Rayleigh behavior in morphotropic PbTiO3 - BiScO3

Tutuncu, Goknur; Forrester, Jennifer S.; Chen, Jing; Jones, Jacob L.

doi:10.1016/j.actamat.2017.07.032

Cited by 20 publications

(5 citation statements)

References 38 publications

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“…The two-step sintering procedure (the details are given in the Materials Synthesis) was employed for the multi-elements doped KNN, where large grain size on the order of 25 μm was obtained at optimized sintering temperature, much larger than those of single element doped counterparts prepared by conventional one-step sintering process, though all of the samples have a similar density of 94-96%. To explore the intrinsic and extrinsic contributions of the piezoelectricity, we performed Rayleigh analysis 23 , 24 . Supplementary Fig.…”

Section: Resultsmentioning

confidence: 99%

The mechanism for the enhanced piezoelectricity in multi-elements doped (K,Na)NbO3 ceramics

et al. 2021

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Abstract(K,Na)NbO3 based ceramics are considered to be one of the most promising lead-free ferroelectrics replacing Pb(Zr,Ti)O3. Despite extensive studies over the last two decades, the mechanism for the enhanced piezoelectricity in multi-elements doped (K,Na)NbO3 ceramics has not been fully understood. Here, we combine temperature-dependent synchrotron x-ray diffraction and property measurements, atomic-scale scanning transmission electron microscopy, and first-principle and phase-field calculations to establish the dopant–structure–property relationship for multi-elements doped (K,Na)NbO3 ceramics. Our results indicate that the dopants induced tetragonal phase and the accompanying high-density nanoscale heterostructures with low-angle polar vectors are responsible for the high dielectric and piezoelectric properties. This work explains the mechanism of the high piezoelectricity recently achieved in (K,Na)NbO3 ceramics and provides guidance for the design of high-performance ferroelectric ceramics, which is expected to benefit numerous functional materials.

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Section: Resultsmentioning

confidence: 99%

The mechanism for the enhanced piezoelectricity in multi-elements doped (K,Na)NbO3 ceramics

et al. 2021

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“…To further explore the contribution of irreversible domain switching, Rayleigh law based on phenomenological theory is also used to reveal the origin of strain [46][47][48][49][50][51][52] . The domain structure remains unchanged with the AC field cycle of 1/2E c to 1/3E c during the Raleigh region, leading to an increase linearly piezoelectric constant under the sub-switching conditions 50 .…”

Section: Characterization Of Irreversible Non-180°domainmentioning

confidence: 99%

Contribution of irreversible non-180° domain to performance for multiphase coexisted potassium sodium niobate ceramics

Wu,

Zhao,

Feng

et al. 2024

Nat Commun

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Despite the dominance of lead-based piezoelectric materials with ultrahigh electric-field-induced strain in actuating applications, seeking eco-friendly substitutes with an equivalent performance remains an urgent demand. Here, a strategy of regulating the irreversible non-180° domain via phase engineering is introduced to optimize the available strain (the difference between the maximum strain and the remnant strain in a unipolar strain curve) in the lead-free potassium–sodium niobate-based piezoelectric ceramics. In situ synchrotron X-ray diffraction and Rayleigh analysis reveal the contribution of the non-180° domain to available strain in the tetragonal–orthorhombic–rhombohedral phase boundary. The reducing orthorhombic phase and increasing rhombohedral/tetragonal phase accompanied by the reduced irreversible non-180° domain are obtained with increasing doping of Sb5+, resulting in an enlarged available strain due to the significantly lowered remnant strain. This optimization is mainly attributed to the reduced irreversible non-180° domain wall motion and the increased lattice distortion, which are beneficial to decrease extrinsic contribution and enhance intrinsic contribution. The mesoscopic structure of miniaturized nanosized domain with facilitated domain switching also contributes to the enhancement of available strain due to the improved random field and decreased energy barrier. The study will shed light on the design of lead-free high-performance piezoelectric ceramics for actuator applications.

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“…The intrinsic contribution is understood to be due to fieldinduced lattice effects, i.e., reversible polarization extension and rotation of the unit cell during application of an external field, which results in net changes to both the polarization as well as the unit cell strain. In contrast, extrinsic contributions are contributions that do not originate from the lattice, which typically is suggested to be largely due to domain wall and phase boundary nucleation and growth under applied external mechanical [52] and electric fields [53,54]. Other hysteretic processes, such as mobile defects, however, can similarly influence the piezoelectric response.…”

Section: Extrinsic Contribution To Piezoelectricitymentioning

confidence: 99%

A review of piezoelectric energy harvesting tiles: Available designs and future perspective

Sharma

Kiran

Azad³

et al. 2022

Energy Conversion and Management

119

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Extrinsic contributions to piezoelectric Rayleigh behavior in morphotropic PbTiO3 - BiScO3

Cited by 20 publications

References 38 publications

The mechanism for the enhanced piezoelectricity in multi-elements doped (K,Na)NbO3 ceramics

The mechanism for the enhanced piezoelectricity in multi-elements doped (K,Na)NbO3 ceramics

Contribution of irreversible non-180° domain to performance for multiphase coexisted potassium sodium niobate ceramics

A review of piezoelectric energy harvesting tiles: Available designs and future perspective

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