Technology transfer of lead-free (K, Na)NbO3-based piezoelectric ceramics

Thong, Hao‐Cheng; Zhao, Chunlin; Zhou, Zhen; Wu, Chaofeng; Liu, Yixuan; Du, Zhaohui; Li, Jing‐Feng; Gong, Wen

doi:10.1016/j.mattod.2019.04.016

Cited by 126 publications

(60 citation statements)

References 133 publications

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“…Temperature stability is an important factor for practical applications, which is one of the biggest challenges for lead-free ceramics. 6,9,12,14,15,41,44 As we know, the intrinsic trait of polymorphic phase boundary (PPB) is to show a distinct temperature-dependent piezoelectric response. 6,9,12,14,15,41,44 Ferroelectric domains, acting as the extrinsic contribution, are also responsible for the temperature Recently, the PBE proposed by Wu et al was widely reported to simultaneously improve the piezoelectric properties and relieve the temperature dependence.…”

Section: Nano-domain Vs Temperature Stabilitymentioning

confidence: 99%

“…6,9,12,14,15,41,44 As we know, the intrinsic trait of polymorphic phase boundary (PPB) is to show a distinct temperature-dependent piezoelectric response. 6,9,12,14,15,41,44 Ferroelectric domains, acting as the extrinsic contribution, are also responsible for the temperature Recently, the PBE proposed by Wu et al was widely reported to simultaneously improve the piezoelectric properties and relieve the temperature dependence. 62,93,157,231,233,235,236,239,266,285,290,296 To understand the enhanced temperature stability, Wu et al compared the temperature stability of ferroelectric domains among KNN-based ceramics with different phase structures.…”

Section: Nano-domain Vs Temperature Stabilitymentioning

confidence: 99%

“…Fatigue behavior is also important for practical applications. 4,12,44 Previous publications mainly focused on the macroscopic electrical properties and the proposed physical models. 452,453 Recently, Tan et al revealed the microstructure mechanism of the fatigue process in 50BCT-50BZT ceramics by using an in situ electric-dependent TEM.…”

Section: Nano-domain Vs Fatiguementioning

confidence: 99%

See 2 more Smart Citations

Nano-domains in lead-free piezoceramics: a review

Zhang

2020

J. Mater. Chem. A

199

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Section: Nano-domain Vs Temperature Stabilitymentioning

confidence: 99%

Section: Nano-domain Vs Temperature Stabilitymentioning

confidence: 99%

Section: Nano-domain Vs Fatiguementioning

confidence: 99%

See 1 more Smart Citation

Nano-domains in lead-free piezoceramics: a review

Zhang

2020

J. Mater. Chem. A

199

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“…In 2016, European Union updated the legislation of Restriction of Hazardous Substances (RoHS) to accelerate the lead‐free revolutions in entire industrial chain 20 . Currently, it has put forward four kinds of promising lead‐free piezoelectric/ferroelectric alternatives, that is, barium titanate (BaTiO 3 , abbreviate as BT), 21,22 potassium‐sodium niobate [(K, Na)NbO 3 ], 23‐33 sodium‐bismuth titanate [(Bi 0.5 Na 0.5 )TiO 3 ], 34‐38 and bismuth ferrite (BiFeO 3 ) 39‐43 . BT polycrystalline ceramic is the earliest perovskite‐type ferroelectric ceramic, which was discovered in 1946 44 .…”

Section: Introductionmentioning

confidence: 99%

Multifunctional barium titanate ceramics via chemical modification tuning phase structure

Zhao

Huang

2020

InfoMat

Self Cite

147

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Global environmental concerns on the toxicity of lead‐based piezoelectrics impel the great mass fervor on investigations of lead‐free alternatives. Barium titanate (BaTiO3, BT) ceramics, the first discovered perovskite ferroelectrics, were widely employed to fabricate dielectric capacitors from 1950s. Since a piezoelectric breakthrough was achieved via chemical modification, intensive researches have been performed embracing lead‐free BT‐based piezoelectrics and their extensional functionalities. In this review, we encompass the state‐of‐the‐art progress on chemical modification tuning phase structure toward advanced electrical properties in BT‐based ceramics. Generally, modulated regularity of cations substitution on phase transition is summarized and clarified. Then, we highlight the common methodologies of phase structure (phase boundary, relaxor phase, room‐temperature phase transition, etc.) design for optimizing piezoelectricity, electrostrictive strain, electrocaloric, dielectric energy storage or permittivity performances, and cover the noticeable developments and relevant physical mechanisms. Finally, perspectives and challenges on future research issues are featured. This review proposes to exert the significant guidance and service for material design of BT‐based and other lead‐free perovskite materials with superior functionalities.

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“…However, comparably low achievable piezoelectric performance in BTO-based composites and low Curie temperatures in high performance calcium and zirconium doped BTO, as well as poor reproducibility in KNN have hindered their extensive application ever since the 1950s 7,8 . Between those two systems, KNN is less well understood due to its multi-scale heterogeneity 9,10 and additionally shows poor sinterability 11,12 , which has been a major barrier to the application of the material. It was not until Saito et al .…”

Section: Introductionmentioning

confidence: 99%

Suppression of abnormal grain growth in K0.5Na0.5NbO3: phase transitions and compatibility

Pop-Ghe

Stock

Quandt

2019

Sci Rep

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This work presents the suppression of abnormal grain growth in bulk ceramic K0.5Na0.5NbO3 (KNN). The suppression is enabled by precise control of the starting powder morphology through match of milling and calcination duration. A comparative temperature-dependent analysis of the resulting sample morphology, phase transitions and related electronic material properties reveals that abnormal grain growth is indeed a major influence in material property deterioration, as has theoretically been suggested in other works. However, it is shown that this abnormal grain growth originates from the calcined powder and not from sintering and that all subsequent steps mirror the initial powder morphology. In specific, the results are discussed with respect to the predictions of the compatibility theory and microstructure. Despite the material’s multi-scale heterogeneity, the suppression of abnormal grain growth allows for the achievement of significantly improved functional properties and it is reported that this development is correctly predicted by the compatibility theory within the borders of microstructural integrity. It could be demonstrated that functional fatigue is strongly minimised, while thermal and electronic properties are improved when abnormal grain growth is suppressed by powder morphology control.

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Technology transfer of lead-free (K, Na)NbO3-based piezoelectric ceramics

Cited by 126 publications

References 133 publications

Nano-domains in lead-free piezoceramics: a review

Nano-domains in lead-free piezoceramics: a review

Multifunctional barium titanate ceramics via chemical modification tuning phase structure

Suppression of abnormal grain growth in K0.5Na0.5NbO3: phase transitions and compatibility

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