Poling dependence and stability of piezoelectric properties of Ba(Zr0.2Ti0.8)O3-(Ba0.7Ca0.3)TiO3 ceramics with huge piezoelectric coefficients

Su, Shi; Zuo, Ruzhong; Lu, Sheng Guo; Xu, Zhengkui; Wang, Xiaohui; Li, Longtu

doi:10.1016/j.cap.2011.01.034

Cited by 160 publications

(52 citation statements)

References 26 publications

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“…Moreover, in both sets of experiments all compositions feature residual piezoelectricity with values of 33 ~ 100 pC/N, even up to 10 °C higher than the . The residual piezoelectricity was also reported in other studies 200,349,352 and can be ascribed to the persistence of domains above . 347 The coupling coefficient 33 is displayed in Figure 5 It is clearly seen that the T phase features higher 33 values than the R phase.…”

Section: Small Signal Propertiessupporting

confidence: 80%

“…Based on considerations from literature and the results from the current work, a complete model that accounts for intrinsic and extrinsic contributions to the electromechanical response of BZT-BCT was developed to reconcile all the experimental observations. The cubic phase: Residual piezoelectricity 347,349,352 , differences in the magnitude of ´ and ´´ above ( Figure 5.4), weak dielectric relaxations (Appendix III), and persistence of domains 347 above all together point towards the existence of weak relaxor features, as previously proposed. 115,116,334 The weak relaxor features depicted in BZT-BCT can be ascribed to the relative content of Zr 4+ and Ca 2+ .…”

Section: Strain Mechanisms Of the (1-x)ba(zr 02 Ti 08 )O 3 -X(ba 0supporting

confidence: 69%

“…Specifically, it was shown that reversible domain switching is maximized at the O to T phase boundary, leading to a contribution that accounts even up to 50 % of the total 33 response at room temperature. 323 322 Small and large signal electromechanical properties of BZT-BCT are highly susceptible to poling conditions 314,324,328,351,352 , stress 326,330 , and temperature variations. 194,320,325 Electromechanical properties were found to have local maxima values around phase boundaries, followed by diminished properties.…”

Section: Electromechanical Propertiesmentioning

confidence: 99%

“…314 Considerable aging was observed after 10 4 min of the poling procedure leading to a 25 % decay of 33 and in dry atmosphere and 30 % decay in wet conditions. 352 Ehmke et al 328 realized that an electric field 20 times larger than leads to 50 % increase of small signal 33 and asymmetry on the large signal strain. This phenomenon was ascribed to the migration of point defects.…”

Section: Electromechanical Propertiesmentioning

confidence: 99%

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Strain Mechanisms in Lead-Free Ferroelectrics for Actuators

Acosta

2016

Springer Theses

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Section: Small Signal Propertiessupporting

confidence: 80%

Section: Strain Mechanisms Of the (1-x)ba(zr 02 Ti 08 )O 3 -X(ba 0supporting

confidence: 69%

Section: Electromechanical Propertiesmentioning

confidence: 99%

Section: Electromechanical Propertiesmentioning

confidence: 99%

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Strain Mechanisms in Lead-Free Ferroelectrics for Actuators

Acosta

2016

Springer Theses

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“…24 Su et al investigated the poling dependence and stability of the electrical properties of 50BZT-50BCT ceramics. 25 Zeng et al reported the fabrication of BCT-BZT single crystal. 26 Piorra et al investigated electrical properties of 50BZT-50BCT thin films deposited by pulsed laser deposition technique.…”

mentioning

confidence: 99%

Synthesis and characterization of lead-free 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 ceramic

Coondoo

Panwar

Amorín

et al. 2013

Journal of Applied Physics

108

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Articles you may be interested inSymmetry determination on Pb-free piezoceramic 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 using convergent beam electron diffraction method J. Appl. Phys. 115, 054108 (2014) Temperature dependent dielectric permittivity studies demonstrated frequency independent behavior, indicating that the studied sample was not a typical relaxor ferroelectric. A polymorphic phase transition between rhombohedral and tetragonal phase was noticed near room temperature followed by a tetragonal to cubic transition with 97 C as the temperature of maximum permittivity. The macroscopic values of d 33 and d 31 were $350 pC/N and À141 pm/V, whereas the electromechanical coupling factors k p and k t were 44.5% and 41.6%, respectively. Bulk P-E hysteresis loop was obtained with saturation polarization 11 lC/cm 2 and coercive field $4 kV/cm. Distinct polarization contrast with a complex mosaic-like domain structure was observed in the out-of-plane mode of piezoresponse force microscopy. The domain width and the correlation length were estimated to be nearly 2 lm and 827 nm, respectively. Local hysteresis loop with apparent coercive voltage, V c ¼ 15.8 V, was observed. V C 2013 AIP Publishing LLC. [http://dx

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Thermomechanical Energy Conversion Potential of Lead‐Free 0.50Ba(Zr_0.2Ti_0.8 )O₃–0.50(Ba_0.7Ca_0.3)TiO₃ Bulk Ceramics

et al. 2017

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When employed appropriately, ferroelectric materials present themselves as one of the most efficient means of waste (thermal/mechanical) energy scavenging. A large conversion potential can be obtained when appropriate materials are combined with high‐field actuation (Ericsson cycle). However, waste energy rarely presents itself in an isolated form (heat or vibration). There is also a distinct lack of systems capable of simultaneous thermomechanical energy conversion, especially in the low‐frequency range. In this regard a systematic approach to the concept of combined energy harvesting and storage potential of a singular material system is presented. Polarization versus electric field hysteresis loops were gathered as a function of temperature, uniaxial compressive stress, and electric field. Thereafter, a theoretical assessment was made to the effect of the biased and unbiased energy conversion potential of 0.50 Ba(Zr0.2Ti0.8)O3–0.50 (Ba0.7Ca0.3)TiO3 bulk lead‐free ferroelectric material. Maximum energy conversion potentials of 150 and 210 kJ m−3 were obtained for thermal (5 MPa, 24–96 °C) and mechanical cycles (24 °C, 5–160 MPa), respectively. A slightly improved performance of 220 kJ m−3 was obtained under simultaneous depolarization, despite performance degradation through individual biasing. However, the energy‐storage density improved by 100 % (80 kJ m−3) and 50 % (60 kJ m−3), respectively, when operated under elevated stress (60 MPa) and temperature (90 °C). Results are indicative of a singular material system that could be used for combined thermomechanical energy conversion and on‐board storage capacity.

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Poling dependence and stability of piezoelectric properties of Ba(Zr0.2Ti0.8)O3-(Ba0.7Ca0.3)TiO3 ceramics with huge piezoelectric coefficients

Cited by 160 publications

References 26 publications

Strain Mechanisms in Lead-Free Ferroelectrics for Actuators

Strain Mechanisms in Lead-Free Ferroelectrics for Actuators

Synthesis and characterization of lead-free 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 ceramic

Thermomechanical Energy Conversion Potential of Lead‐Free 0.50Ba(Zr_0.2Ti_0.8 )O₃–0.50(Ba_0.7Ca_0.3)TiO₃ Bulk Ceramics

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Poling dependence and stability of piezoelectric properties of Ba(Zr0.2Ti0.8)O3-(Ba0.7Ca0.3)TiO3 ceramics with huge piezoelectric coefficients

Cited by 160 publications

References 26 publications

Strain Mechanisms in Lead-Free Ferroelectrics for Actuators

Strain Mechanisms in Lead-Free Ferroelectrics for Actuators

Synthesis and characterization of lead-free 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 ceramic

Thermomechanical Energy Conversion Potential of Lead‐Free 0.50Ba(Zr0.2Ti0.8 )O3–0.50(Ba0.7Ca0.3)TiO3 Bulk Ceramics

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Thermomechanical Energy Conversion Potential of Lead‐Free 0.50Ba(Zr_0.2Ti_0.8 )O₃–0.50(Ba_0.7Ca_0.3)TiO₃ Bulk Ceramics