Influence of quenching temperature on piezoelectric and ferroelectrics properties in BaTiO3-Bi(Mg1/2Ti1/2)O3-BiFeO3 ceramics

Nam, Hyunwook; Kim, Sang–Wook; Aizawa, Tomoya; Fujii, Ichiro; Ueno, S.; Wada, Satoshi

doi:10.1016/j.ceramint.2018.08.115

Cited by 36 publications

(14 citation statements)

References 20 publications

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“…The piezoelectric and ferroelectric properties were enhanced in the BF-BT ceramics when quenching at 800 • C was performed without going through the temperature at which decomposition occurred, as shown in Figure 19. A similar result was obtained for the BT-BMT-BF system [102]. Nam et al investigated the quenching temperature effect on piezoelectric properties in BT-BMT-BF system.…”

Section: Heat-treatmentsupporting

confidence: 69%

“…BF-BT-based ceramics is significantly enhanced by the quenching or rapid cooling process compared to the non-quenching process (commonly referred as furnace cooling, slow cooling, as-sintered). Therefore, a quenching process is found to be one of the successful methods to improve piezoelectricity in BF-based lead-free systems, and this has led to further research on the effect of quenching processes, such as quenching temperature or cooling rate [101,102].…”

Section: Piezoelectric Propertiesmentioning

confidence: 99%

“…In general, defects can be suppressed by controlling the chemical composition through donor or acceptor doping. Recently, a method for reducing the leakage current by controlling the charged defect distribution rather than controlling the number of charged defects using doping or substitution has been proposed [102,135]. The main cause of the decrease in electrical properties due to charged defects is located on the domain wall and forms defect dipoles to interrupt polarization switching [136,137].…”

Section: Heat-treatmentmentioning

confidence: 99%

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Lead-Free BiFeO3-Based Piezoelectrics: A Review of Controversial Issues and Current Research State

2022

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Lead-free electroceramics represent an emerging area of research that has the potential to enable new green advances in electronics. Research has mainly focused on the development of new piezoelectric materials for replacing lead containing oxides exhibiting superior electromechanical behavior. Lead-free BiFeO3-based materials are not only the promising candidates to replace lead-based materials but also show intriguing properties which may inspire innovative material design for the next generation of lead-free piezoceramics. This review aims to highlight the current state of research and overlooked aspects in lead-free BiFeO3-based ceramics, which could be insightful in elucidating certain controversial issues. Current strategies to reduce high conductivity, influence of chemical heterogeneity on both functional properties and crystal structure, effective heat treatment procedures, and the role of pseudo-cubic structures on the enhancement of piezoelectric properties are subjects of highlighted within this review as they have a significant impact on the quality of BiFeO3-based lead-free piezoelectrics (but are often disregarded).

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Section: Heat-treatmentsupporting

confidence: 69%

Section: Piezoelectric Propertiesmentioning

confidence: 99%

Section: Heat-treatmentmentioning

confidence: 99%

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Lead-Free BiFeO3-Based Piezoelectrics: A Review of Controversial Issues and Current Research State

2022

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“…15,[458][459][460][461][462][463][464] Therefore, different methods have been developed to modify the BNT-based ceramics, such as ion substitution, binary or ternary solid solution, ceramic composite, and quenching. 13,57,[473][474][475][476][477][478] These methods essentially affect the domain structure and subsequently change the macro performance.…”

Section: Nano-domains In Bnt-based Ceramicsmentioning

confidence: 99%

Nano-domains in lead-free piezoceramics: a review

Zhang

2020

J. Mater. Chem. A

180

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“…For mechanical stress relaxation and domain-wall-depinning, the samples were annealed at 800°C for 20 h and then quenched in water. 22), 23) The crystal structure was investigated by X-ray diffraction (XRD) using Cu K ¡ radiation (Ultima IV, Rigaku). The polished surfaces of the samples (as-sintered and heattreated) with both geometrical dimensions were coated with Au electrodes by ion sputtering prior to the evaluation of electrical properties and the effect of AC-and DC-bias field poling.…”

Section: Methodsmentioning

confidence: 99%

Effects of AC- and DC-bias field poling on piezoelectric properties of Bi-based ceramics

Kim

Khanal

Nam

et al. 2019

J. Ceram. Soc. Japan

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The structural and electrical properties of 0.75BiFeO 3 0.25BaTiO 3 (BF25BT) ceramics, with and without heat treatment, were investigated. The polished and cut BF25BT ceramics were thermally annealed at 800°C for 20 h and then quenched in water at room temperature (heat-treated ceramics). The PE hysteresis loop and SE curve were significantly improved after the heat treatment process. Meanwhile, the leakage current density at an electric field of 50 kV/cm was reduced from 4.847 © 10 ¹7 (as-sintered ceramics) to 3.213 © 10 ¹8 A/cm 2 (heattreated ceramics). The heat-treated ceramics was poled at 120°C with applying a DC-bias field of 50 kV/cm, and the maximum phase angle was ¹39°, which was evaluated from the analysis of frequency-dependence of impedance and phase angle. Because of the small maximum phase angle obtained by poling under DC-bias field alone, the poling process was modified; that is, an AC-bias field was applied prior to the DC-bias field poling. The ceramics poled with the modified poling procedure exhibited the maximum phase angle of 63°. The appreciable increase of the maximum phase angle suggested the higher degree of domain alignment than that of its counterpart, and the effect was explained in terms of improved domain switching. The piezoelectric constant d 33 was increased twice with adopting the modified poling process, which signifies that poling with both AC-and DC-bias field is highly effective in the lead-free Bi-based systems.

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Influence of quenching temperature on piezoelectric and ferroelectrics properties in BaTiO3-Bi(Mg1/2Ti1/2)O3-BiFeO3 ceramics

Cited by 36 publications

References 20 publications

Lead-Free BiFeO3-Based Piezoelectrics: A Review of Controversial Issues and Current Research State

Lead-Free BiFeO3-Based Piezoelectrics: A Review of Controversial Issues and Current Research State

Nano-domains in lead-free piezoceramics: a review

Effects of AC- and DC-bias field poling on piezoelectric properties of Bi-based ceramics

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