The influence of electrical field on (K,Na)NbO3-based ceramics over polymorphic phase transition composition region

Yongjie Zhao; Jialin Liu; Dong Yan; Heping Zhou; Xiaowen Zhang

doi:10.1016/j.ceramint.2019.07.074

The influence of electrical field on (K,Na)NbO₃-based ceramics over polymorphic phase transition composition region

Yongjie Zhao^*, Jialin Liu, Dong Yan, Heping Zhou, Xiaowen Zhang

^*Corresponding author for this work

School of Material Science and Engineering

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

3 Citations (Scopus)

Abstract

By investigating the responding behavior of Li modified (K,Na)NbO₃ ceramics under external electrical field, a coincidence phenomenon had been observed. It was found that the amplitude of piezoelectricity enhancement for these ceramics with pure orthorhombic, coexistence and tetragonal phase were consistent with the variation amplitude for the transition temperature from orthorhombic to tetragonal (T_O-T). The interpretation of the remnant polarization (P_r) had rationally demonstrated the enhancement of piezoelectricity for these three kinds of ceramics. The residual polarization energy induced by remnant polarization (P_r) was about to affect the thermodynamic equilibrium state of these ceramics and accordingly ΔT_O-T varied with these poled ceramics.

Original language	English
Pages (from-to)	21044-21047
Number of pages	4
Journal	Ceramics International
Volume	45
Issue number	16
DOIs	https://doi.org/10.1016/j.ceramint.2019.07.074
Publication status	Published - Nov 2019

Keywords

Enhancement of piezoelectricity d
Remnant polarization P
Thermodynamic equilibrium
Variation of T

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10.1016/j.ceramint.2019.07.074

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title = "The influence of electrical field on (K,Na)NbO3-based ceramics over polymorphic phase transition composition region",

abstract = "By investigating the responding behavior of Li modified (K,Na)NbO3 ceramics under external electrical field, a coincidence phenomenon had been observed. It was found that the amplitude of piezoelectricity enhancement for these ceramics with pure orthorhombic, coexistence and tetragonal phase were consistent with the variation amplitude for the transition temperature from orthorhombic to tetragonal (TO-T). The interpretation of the remnant polarization (Pr) had rationally demonstrated the enhancement of piezoelectricity for these three kinds of ceramics. The residual polarization energy induced by remnant polarization (Pr) was about to affect the thermodynamic equilibrium state of these ceramics and accordingly ΔTO-T varied with these poled ceramics.",

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author = "Yongjie Zhao and Jialin Liu and Dong Yan and Heping Zhou and Xiaowen Zhang",

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T1 - The influence of electrical field on (K,Na)NbO3-based ceramics over polymorphic phase transition composition region

AU - Zhao, Yongjie

AU - Liu, Jialin

AU - Yan, Dong

AU - Zhou, Heping

AU - Zhang, Xiaowen

PY - 2019/11

Y1 - 2019/11

N2 - By investigating the responding behavior of Li modified (K,Na)NbO3 ceramics under external electrical field, a coincidence phenomenon had been observed. It was found that the amplitude of piezoelectricity enhancement for these ceramics with pure orthorhombic, coexistence and tetragonal phase were consistent with the variation amplitude for the transition temperature from orthorhombic to tetragonal (TO-T). The interpretation of the remnant polarization (Pr) had rationally demonstrated the enhancement of piezoelectricity for these three kinds of ceramics. The residual polarization energy induced by remnant polarization (Pr) was about to affect the thermodynamic equilibrium state of these ceramics and accordingly ΔTO-T varied with these poled ceramics.

AB - By investigating the responding behavior of Li modified (K,Na)NbO3 ceramics under external electrical field, a coincidence phenomenon had been observed. It was found that the amplitude of piezoelectricity enhancement for these ceramics with pure orthorhombic, coexistence and tetragonal phase were consistent with the variation amplitude for the transition temperature from orthorhombic to tetragonal (TO-T). The interpretation of the remnant polarization (Pr) had rationally demonstrated the enhancement of piezoelectricity for these three kinds of ceramics. The residual polarization energy induced by remnant polarization (Pr) was about to affect the thermodynamic equilibrium state of these ceramics and accordingly ΔTO-T varied with these poled ceramics.

KW - Enhancement of piezoelectricity d

KW - Remnant polarization P

KW - Thermodynamic equilibrium

KW - Variation of T

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DO - 10.1016/j.ceramint.2019.07.074

M3 - Article

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SN - 0272-8842

VL - 45

SP - 21044

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JO - Ceramics International

JF - Ceramics International

IS - 16

ER -

The influence of electrical field on (K,Na)NbO₃-based ceramics over polymorphic phase transition composition region

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