Lead-free piezoelectric KNN-BZ-BNT films with a vertical morphotropic phase boundary

Wen Chen; Jinyan Zhao; Lingyan Wang; Wei Ren; Ming Liu

doi:10.1063/1.4928095

Lead-free piezoelectric KNN-BZ-BNT films with a vertical morphotropic phase boundary

Faculty of Electronic and Information Engineering

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Abstract

The lead-free piezoelectric 0.915K_0.5Na_0.5NbO₃-0.075BaZrO₃-0.01Bi_0.5Na_0.5TiO₃ (0.915KNN-0.075BZ-0.01BNT) films were prepared by a chemical solution deposition method. The films possess a pure rhomobohedral perovskite phase and a dense surface without crack. The temperature-dependent dielectric properties of the specimens manifest that only phase transition from ferroelectric to paraelectric phase occurred and the Curie temperature is 217 ^oC. The temperature stability of ferroelectric phase was also supported by the stable piezoelectric properties of the films. These results suggest that the slope of the morphotropic phase boundary (MPB) for the solid solution formed with the KNN and BZ in the films should be vertical. The voltage-induced polarization switching, and a distinct piezo-response suggested that the 0.915 KNN-0.075BZ-0.01BNT films show good piezoelectric properties.

Original language	English
Article number	077190
Journal	AIP Advances
Volume	5
Issue number	7
DOIs	https://doi.org/10.1063/1.4928095
State	Published - 1 Jul 2015

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title = "Lead-free piezoelectric KNN-BZ-BNT films with a vertical morphotropic phase boundary",

abstract = "The lead-free piezoelectric 0.915K0.5Na0.5NbO3-0.075BaZrO3-0.01Bi0.5Na0.5TiO3 (0.915KNN-0.075BZ-0.01BNT) films were prepared by a chemical solution deposition method. The films possess a pure rhomobohedral perovskite phase and a dense surface without crack. The temperature-dependent dielectric properties of the specimens manifest that only phase transition from ferroelectric to paraelectric phase occurred and the Curie temperature is 217 oC. The temperature stability of ferroelectric phase was also supported by the stable piezoelectric properties of the films. These results suggest that the slope of the morphotropic phase boundary (MPB) for the solid solution formed with the KNN and BZ in the films should be vertical. The voltage-induced polarization switching, and a distinct piezo-response suggested that the 0.915 KNN-0.075BZ-0.01BNT films show good piezoelectric properties.",

author = "Wen Chen and Jinyan Zhao and Lingyan Wang and Wei Ren and Ming Liu",

note = "Publisher Copyright: {\textcopyright} 2015 Author(s).",

year = "2015",

month = jul,

day = "1",

doi = "10.1063/1.4928095",

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T1 - Lead-free piezoelectric KNN-BZ-BNT films with a vertical morphotropic phase boundary

AU - Chen, Wen

AU - Zhao, Jinyan

AU - Wang, Lingyan

AU - Ren, Wei

AU - Liu, Ming

PY - 2015/7/1

Y1 - 2015/7/1

N2 - The lead-free piezoelectric 0.915K0.5Na0.5NbO3-0.075BaZrO3-0.01Bi0.5Na0.5TiO3 (0.915KNN-0.075BZ-0.01BNT) films were prepared by a chemical solution deposition method. The films possess a pure rhomobohedral perovskite phase and a dense surface without crack. The temperature-dependent dielectric properties of the specimens manifest that only phase transition from ferroelectric to paraelectric phase occurred and the Curie temperature is 217 oC. The temperature stability of ferroelectric phase was also supported by the stable piezoelectric properties of the films. These results suggest that the slope of the morphotropic phase boundary (MPB) for the solid solution formed with the KNN and BZ in the films should be vertical. The voltage-induced polarization switching, and a distinct piezo-response suggested that the 0.915 KNN-0.075BZ-0.01BNT films show good piezoelectric properties.

AB - The lead-free piezoelectric 0.915K0.5Na0.5NbO3-0.075BaZrO3-0.01Bi0.5Na0.5TiO3 (0.915KNN-0.075BZ-0.01BNT) films were prepared by a chemical solution deposition method. The films possess a pure rhomobohedral perovskite phase and a dense surface without crack. The temperature-dependent dielectric properties of the specimens manifest that only phase transition from ferroelectric to paraelectric phase occurred and the Curie temperature is 217 oC. The temperature stability of ferroelectric phase was also supported by the stable piezoelectric properties of the films. These results suggest that the slope of the morphotropic phase boundary (MPB) for the solid solution formed with the KNN and BZ in the films should be vertical. The voltage-induced polarization switching, and a distinct piezo-response suggested that the 0.915 KNN-0.075BZ-0.01BNT films show good piezoelectric properties.

UR - https://www.scopus.com/pages/publications/84938374909

U2 - 10.1063/1.4928095

DO - 10.1063/1.4928095

M3 - 文章

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SN - 2158-3226

VL - 5

JO - AIP Advances

JF - AIP Advances

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M1 - 077190

ER -

Lead-free piezoelectric KNN-BZ-BNT films with a vertical morphotropic phase boundary

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