Crystalline phase and electrical properties of lead-free piezoelectric KNN-based films with different orientations

Wen Chen; Lingyan Wang; Wei Ren; Gang Niu; Jinyan Zhao; Nan Zhang; Ming Liu; Ye Tian; Ming Dong

doi:10.1111/jace.14828

Crystalline phase and electrical properties of lead-free piezoelectric KNN-based films with different orientations

Wen Chen
, Lingyan Wang
, Wei Ren
, Gang Niu
, Jinyan Zhao
, Nan Zhang
, Ming Liu
, Ye Tian
, Ming Dong

Faculty of Electronic and Information Engineering

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

18 Scopus citations

Abstract

Lead-free piezoelectric 0.915K_0.5Na_0.5NbO₃-0.075BaZrO₃-0.01Bi_0.5Na_0.5TiO₃ (KNN-BZ-BNT) films were grown on Nb-doped SrTiO₃ substrates with different orientations. The thin films show highly preferential orientations in accordance with the orientations of single crystalline substrates. The films all exhibit a weak contrast and remarkable homogeneity in the local static out-of-plane piezoresponse phase images, suggesting a strong self-polarization. Combining with the analysis of XRD-RSM, TEM and PFM, the crystalline phase of our samples was determined to be rhombohedral, which has the spontaneous polarization along [111] direction. Thus, the (100)-oriented film demonstrates the most superior piezoelectric properties. Our detailed studies on structural and electrical properties of KNN-BZ-BNT films further clarify the structure-property relationship and make a step closer to use this lead-free material for many piezoelectric applications.

Original language	English
Pages (from-to)	2965-2971
Number of pages	7
Journal	Journal of the American Ceramic Society
Volume	100
Issue number	7
DOIs	https://doi.org/10.1111/jace.14828
State	Published - 1 Jul 2017

Keywords

electrical properties
lead-free ceramics
orientation
structure
thin films

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10.1111/jace.14828

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@article{ab3ecd7cab2648f8b9ea73d33b5d66f6,

title = "Crystalline phase and electrical properties of lead-free piezoelectric KNN-based films with different orientations",

abstract = "Lead-free piezoelectric 0.915K0.5Na0.5NbO3-0.075BaZrO3-0.01Bi0.5Na0.5TiO3 (KNN-BZ-BNT) films were grown on Nb-doped SrTiO3 substrates with different orientations. The thin films show highly preferential orientations in accordance with the orientations of single crystalline substrates. The films all exhibit a weak contrast and remarkable homogeneity in the local static out-of-plane piezoresponse phase images, suggesting a strong self-polarization. Combining with the analysis of XRD-RSM, TEM and PFM, the crystalline phase of our samples was determined to be rhombohedral, which has the spontaneous polarization along [111] direction. Thus, the (100)-oriented film demonstrates the most superior piezoelectric properties. Our detailed studies on structural and electrical properties of KNN-BZ-BNT films further clarify the structure-property relationship and make a step closer to use this lead-free material for many piezoelectric applications.",

keywords = "electrical properties, lead-free ceramics, orientation, structure, thin films",

author = "Wen Chen and Lingyan Wang and Wei Ren and Gang Niu and Jinyan Zhao and Nan Zhang and Ming Liu and Ye Tian and Ming Dong",

note = "Publisher Copyright: {\textcopyright} 2017 The American Ceramic Society",

year = "2017",

month = jul,

day = "1",

doi = "10.1111/jace.14828",

language = "英语",

volume = "100",

pages = "2965--2971",

journal = "Journal of the American Ceramic Society",

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TY - JOUR

T1 - Crystalline phase and electrical properties of lead-free piezoelectric KNN-based films with different orientations

AU - Chen, Wen

AU - Wang, Lingyan

AU - Ren, Wei

AU - Niu, Gang

AU - Zhao, Jinyan

AU - Zhang, Nan

AU - Liu, Ming

AU - Tian, Ye

AU - Dong, Ming

PY - 2017/7/1

Y1 - 2017/7/1

N2 - Lead-free piezoelectric 0.915K0.5Na0.5NbO3-0.075BaZrO3-0.01Bi0.5Na0.5TiO3 (KNN-BZ-BNT) films were grown on Nb-doped SrTiO3 substrates with different orientations. The thin films show highly preferential orientations in accordance with the orientations of single crystalline substrates. The films all exhibit a weak contrast and remarkable homogeneity in the local static out-of-plane piezoresponse phase images, suggesting a strong self-polarization. Combining with the analysis of XRD-RSM, TEM and PFM, the crystalline phase of our samples was determined to be rhombohedral, which has the spontaneous polarization along [111] direction. Thus, the (100)-oriented film demonstrates the most superior piezoelectric properties. Our detailed studies on structural and electrical properties of KNN-BZ-BNT films further clarify the structure-property relationship and make a step closer to use this lead-free material for many piezoelectric applications.

AB - Lead-free piezoelectric 0.915K0.5Na0.5NbO3-0.075BaZrO3-0.01Bi0.5Na0.5TiO3 (KNN-BZ-BNT) films were grown on Nb-doped SrTiO3 substrates with different orientations. The thin films show highly preferential orientations in accordance with the orientations of single crystalline substrates. The films all exhibit a weak contrast and remarkable homogeneity in the local static out-of-plane piezoresponse phase images, suggesting a strong self-polarization. Combining with the analysis of XRD-RSM, TEM and PFM, the crystalline phase of our samples was determined to be rhombohedral, which has the spontaneous polarization along [111] direction. Thus, the (100)-oriented film demonstrates the most superior piezoelectric properties. Our detailed studies on structural and electrical properties of KNN-BZ-BNT films further clarify the structure-property relationship and make a step closer to use this lead-free material for many piezoelectric applications.

KW - electrical properties

KW - lead-free ceramics

KW - orientation

KW - structure

KW - thin films

UR - https://www.scopus.com/pages/publications/85017372040

U2 - 10.1111/jace.14828

DO - 10.1111/jace.14828

M3 - 文章

AN - SCOPUS:85017372040

SN - 0002-7820

VL - 100

SP - 2965

EP - 2971

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 7

ER -

Crystalline phase and electrical properties of lead-free piezoelectric KNN-based films with different orientations

Abstract

Keywords

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