Synergetic Contributions in Phase Boundary Engineering to the Piezoelectricity of Potassium Sodium Niobate Lead-Free Piezoceramics

Xiang Lv; Junwei Zhang; Yao Liu; Fei Li; Xixiang Zhang; Jiagang Wu

doi:10.1021/acsami.0c12424

Synergetic Contributions in Phase Boundary Engineering to the Piezoelectricity of Potassium Sodium Niobate Lead-Free Piezoceramics

Xiang Lv, Junwei Zhang, Yao Liu, Fei Li, Xixiang Zhang, Jiagang Wu

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Although the pronounced piezoelectricity was obtained in (K, Na)NbO3 piezoceramics with the phase boundary engineering (PBE), the physical mechanisms remain pending. Here we revealed for the first time how PBE influences the piezoelectric properties through synergetic contributions. Cryogenic experiments confirm that PBE constructs a phase coexistence, consisting of rhombohedral (R), orthorhombic (O), and tetragonal (T) phases, with a structural softening, by which a high piezoelectric coefficient d33 of 555 pC/N and the enhanced temperature stability of strain are achieved. The phenomenological theory and transmission electron microscope demonstrate that the superior d33 hinges on the flattened Gibbs free energy and the abundant nano-domains (10-80 nm), which respectively induce the enhanced permittivity and the coexisting single-domain and multi-domain zones. In particular, we disclosed a trade-off relationship between ferroelectric domains and polarnanoregions (PNRs) and found the “double-edged sword” role of PNRs in the piezoelectricity enhancement. Therefore, this work helps understand the physical mechanisms of the piezoelectricity enhancement, benefiting the future research of lead-free piezoceramics.

Original language	English (US)
Journal	ACS Applied Materials & Interfaces
DOIs	https://doi.org/10.1021/acsami.0c12424
State	Published - Aug 4 2020

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors gratefully acknowledge the support of the National Natural Science Foundation of China (Nos. 51722208 and 51972215) and the Key Technologies Research and Development Program of Sichuan Province (No. 2018JY0007). Dr. X. Lv and Dr. J. Zhang contributed equally to this work.

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10.1021/acsami.0c12424

https://repository.kaust.edu.sa/bitstream/10754/664513/1/Synergetic_am-2020-12424u_Proof_hi.pdf

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@article{978b9aec37eb40daa95413b36f421036,

title = "Synergetic Contributions in Phase Boundary Engineering to the Piezoelectricity of Potassium Sodium Niobate Lead-Free Piezoceramics",

abstract = "Although the pronounced piezoelectricity was obtained in (K, Na)NbO3 piezoceramics with the phase boundary engineering (PBE), the physical mechanisms remain pending. Here we revealed for the first time how PBE influences the piezoelectric properties through synergetic contributions. Cryogenic experiments confirm that PBE constructs a phase coexistence, consisting of rhombohedral (R), orthorhombic (O), and tetragonal (T) phases, with a structural softening, by which a high piezoelectric coefficient d33 of 555 pC/N and the enhanced temperature stability of strain are achieved. The phenomenological theory and transmission electron microscope demonstrate that the superior d33 hinges on the flattened Gibbs free energy and the abundant nano-domains (10-80 nm), which respectively induce the enhanced permittivity and the coexisting single-domain and multi-domain zones. In particular, we disclosed a trade-off relationship between ferroelectric domains and polarnanoregions (PNRs) and found the “double-edged sword” role of PNRs in the piezoelectricity enhancement. Therefore, this work helps understand the physical mechanisms of the piezoelectricity enhancement, benefiting the future research of lead-free piezoceramics.",

author = "Xiang Lv and Junwei Zhang and Yao Liu and Fei Li and Xixiang Zhang and Jiagang Wu",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors gratefully acknowledge the support of the National Natural Science Foundation of China (Nos. 51722208 and 51972215) and the Key Technologies Research and Development Program of Sichuan Province (No. 2018JY0007). Dr. X. Lv and Dr. J. Zhang contributed equally to this work.",

year = "2020",

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doi = "10.1021/acsami.0c12424",

language = "English (US)",

journal = "ACS Applied Materials & Interfaces",

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T1 - Synergetic Contributions in Phase Boundary Engineering to the Piezoelectricity of Potassium Sodium Niobate Lead-Free Piezoceramics

AU - Lv, Xiang

AU - Zhang, Junwei

AU - Liu, Yao

AU - Li, Fei

AU - Zhang, Xixiang

AU - Wu, Jiagang

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors gratefully acknowledge the support of the National Natural Science Foundation of China (Nos. 51722208 and 51972215) and the Key Technologies Research and Development Program of Sichuan Province (No. 2018JY0007). Dr. X. Lv and Dr. J. Zhang contributed equally to this work.

PY - 2020/8/4

Y1 - 2020/8/4

N2 - Although the pronounced piezoelectricity was obtained in (K, Na)NbO3 piezoceramics with the phase boundary engineering (PBE), the physical mechanisms remain pending. Here we revealed for the first time how PBE influences the piezoelectric properties through synergetic contributions. Cryogenic experiments confirm that PBE constructs a phase coexistence, consisting of rhombohedral (R), orthorhombic (O), and tetragonal (T) phases, with a structural softening, by which a high piezoelectric coefficient d33 of 555 pC/N and the enhanced temperature stability of strain are achieved. The phenomenological theory and transmission electron microscope demonstrate that the superior d33 hinges on the flattened Gibbs free energy and the abundant nano-domains (10-80 nm), which respectively induce the enhanced permittivity and the coexisting single-domain and multi-domain zones. In particular, we disclosed a trade-off relationship between ferroelectric domains and polarnanoregions (PNRs) and found the “double-edged sword” role of PNRs in the piezoelectricity enhancement. Therefore, this work helps understand the physical mechanisms of the piezoelectricity enhancement, benefiting the future research of lead-free piezoceramics.

AB - Although the pronounced piezoelectricity was obtained in (K, Na)NbO3 piezoceramics with the phase boundary engineering (PBE), the physical mechanisms remain pending. Here we revealed for the first time how PBE influences the piezoelectric properties through synergetic contributions. Cryogenic experiments confirm that PBE constructs a phase coexistence, consisting of rhombohedral (R), orthorhombic (O), and tetragonal (T) phases, with a structural softening, by which a high piezoelectric coefficient d33 of 555 pC/N and the enhanced temperature stability of strain are achieved. The phenomenological theory and transmission electron microscope demonstrate that the superior d33 hinges on the flattened Gibbs free energy and the abundant nano-domains (10-80 nm), which respectively induce the enhanced permittivity and the coexisting single-domain and multi-domain zones. In particular, we disclosed a trade-off relationship between ferroelectric domains and polarnanoregions (PNRs) and found the “double-edged sword” role of PNRs in the piezoelectricity enhancement. Therefore, this work helps understand the physical mechanisms of the piezoelectricity enhancement, benefiting the future research of lead-free piezoceramics.

UR - http://hdl.handle.net/10754/664513

UR - https://pubs.acs.org/doi/10.1021/acsami.0c12424

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JO - ACS Applied Materials & Interfaces

JF - ACS Applied Materials & Interfaces

ER -

Synergetic Contributions in Phase Boundary Engineering to the Piezoelectricity of Potassium Sodium Niobate Lead-Free Piezoceramics

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