Evidence of temperature dependent domain wall dynamics in hard lead zirconate titanate piezoceramics

García, José E.; Ochoa, Diego A.; Gomis, V.; Eiras, J. A.; Pérez, R.

doi:10.1063/1.4736582

Cited by 29 publications

(14 citation statements)

References 24 publications

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“…non-relaxor) systems show a frequency-dependent low temperature dielectric anomaly. For instance, the well-known -PbZr Ti O x x 1 3 (PZT) system shows a low temperature dielectric relaxation for different crystallographic structures (different x values) and dopants (donors and/or acceptors) [10][11][12][13]. A similar anomalous behavior has also been reported in NaNbO 3 [14], ( ) K, Na NbO 3 [15] [19], and other perovskite systems.…”

Section: Introductionsupporting

confidence: 58%

Insight into the dynamics of low temperature dielectric relaxation of ordinary perovskite ferroelectrics

et al. 2017

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The temperature dependence of the dielectric response of ordinary ferroelectric materials exhibits a frequency-independent anomalous peak as a manifestation of the ferroelectric to paraelectric phase transition. A second anomaly in the permittivity has been reported in different ferroelectric perovskite-type systems at low temperatures, often at cryogenic temperatures. This anomaly manifests as a frequency-dependent local maximum, which exhibits similar characteristics to that observed in relaxor ferroelectrics around their phase transition. The origin of this unexpected behavior is still controversial. In order to clarify this phenomenon, a model-free route solution is developed in this work. Our findings reveal the same critical linear pattern/glass-like freezing behavior previously observed for glass-forming systems. Contrary to current thought, our results suggest that a critical-like dynamic parameterization could provide a more appropriate solution than the conventional Vogel-Fulcher-Tammann equation. The implemented methodology may open a new pathway for analyzing relaxation phenomena in other functional materials like relaxor ferroics.

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Section: Introductionsupporting

confidence: 58%

Insight into the dynamics of low temperature dielectric relaxation of ordinary perovskite ferroelectrics

et al. 2017

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“…22 This observation proves that the nonlinear behavior is directly related to the extrinsic effect. 11 The nonlinear dielectric response is significant at temperatures at which the domain wall motion contribution becomes important, usually above 150 K. 23 Nonlinear dielectric response increases in the FO region as the temperature rises up to the PPB region, where the nonlinear response maximizes (this is particularly noticeable in ''), and then decreases again in the FT region.…”

Section: This Is the Post-print (Ie Final Draft Post-refereeing) Ofmentioning

confidence: 99%

Extrinsic response enhancement at the polymorphic phase boundary in piezoelectric materials

Ochoa

Esteves

Jones

et al. 2016

Applied Physics Letters

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Polymorphic phase boundaries (PPBs) in piezoelectric materials have attracted significant interest in recent years, in particular because of the unique properties that can be found in their vicinity. However, to fully harness their potential as micro-nanoscale functional entities, it is essential to achieve reliable and precise control of their piezoelectric response, which is due to two contributions known as intrinsic and extrinsic. In this work we have used a (K,Na)NbO3-based lead-free piezoceramic as a model system to investigate the evolution of the extrinsic contribution around a PPB. X-ray diffraction measurements are performed over a wide range of temperatures in order to determine the structures and transitions. The relevance of the extrinsic contribution at the PPB region is evaluated by means of nonlinear dielectric response measurements. Though it is widely appreciated that certain intrinsic properties of ferroelectric materials increase as PPBs are approached, our results demonstrate that the extrinsic contribution also maximizes. An enhancement of the extrinsic contribution is therefore also responsible for improving the functional properties at the PPB region. Rayleigh's law is used to quantitatively analyze the nonlinear response. As a result, an evolution of the domain wall motion dynamics through the PPB region is detected. This work demonstrates that the extrinsic contribution at a PPB may have a dynamic role in leadfree piezoelectric materials, thereby exerting a far greater influence on their functional properties than that considered to date. a)

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“…43 However, it has been suggested that in hard PZTs that reversible domain wall movement is the dominant mechanism at room temperature as the material response does not adhere to Rayleigh law. 44 As the Rayleigh law is closely obeyed in the BF-KBT-PT system, it can be inferred that this system behaves more similarly to a soft PZT although driven at much higher excitation levels where lossy processes could become more prevalent, hence an increase in the contribution from reversible domain wall processes.…”

Section: Reconstructing the Temperature Dependence Of The Intrinsimentioning

confidence: 99%

Temperature dependence of the intrinsic and extrinsic contributions in BiFeO3-(K0.5Bi0.5)TiO3-PbTiO3 piezoelectric ceramics

Bennett

Shrout

Zhang

et al. 2014

Journal of Applied Physics

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Articles you may be interested in Tailoring This contribution focuses on the use of modified Rayleigh law as a technique for determining the intrinsic and extrinsic (reversible/irreversible) contributions to the piezoelectric effect up to 150 C across a broad compositional space, augmenting previous understanding of the BiFeO 3 -(K 0.5 Bi 0.5 )TiO 3 -PbTiO 3 system. At room temperature, a mechanistic explanation of the correlation between crystal symmetry, i.e., tetragonal spontaneous strain, x s , and the Rayleigh relations using Landau theory is provided. The intrinsic response was found to be heavily dependent upon the tetragonal x s , whereby an optimisation between polarization and permittivity was elucidated, leading to enhanced piezoelectric charge coefficients. A c/a ratio of $1.041 was identified at which the room temperature intrinsic and extrinsic effects were at a maximum; a d init of 183 Â 10 À12 m/V and Rayleigh coefficient of 59 Â 10 À18 m 2 /V 2 were measured, resulting in the largest piezoelectric charge coefficients. The piezoelectric charge coefficient d 33 , intrinsic and extrinsic contributions of these materials were all found to increase up to 150 C while adhering to the Rayleigh model. The reversible extrinsic component of the total reversible response, d init , was calculated to be relatively minor, 4.9% at room temperature, increasing to 12.1% at 150 C, signifying its increasing influence to the piezoelectric effect, as domain wall motion is thermally activated. Hence, the phenomenological interpretation provided here may be used as a roadmap to elucidate the origins of the temperature dependence of the piezoelectric effect. V C 2014 AIP Publishing LLC.

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Evidence of temperature dependent domain wall dynamics in hard lead zirconate titanate piezoceramics

Cited by 29 publications

References 24 publications

Insight into the dynamics of low temperature dielectric relaxation of ordinary perovskite ferroelectrics

Insight into the dynamics of low temperature dielectric relaxation of ordinary perovskite ferroelectrics

Extrinsic response enhancement at the polymorphic phase boundary in piezoelectric materials

Temperature dependence of the intrinsic and extrinsic contributions in BiFeO3-(K0.5Bi0.5)TiO3-PbTiO3 piezoelectric ceramics

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