Effect of poling condition on piezoelectric properties of (K0.5Na0.5)NbO3-LiNbO3 lead-free piezoelectric ceramics

Hongliang Du; Fusheng Tang; Fa Luo; Wancheng Zhou; Shaobo Qu; Zhibin Pei

doi:10.1016/j.mseb.2006.11.020

Effect of poling condition on piezoelectric properties of (K_0.5Na_0.5)NbO₃-LiNbO₃ lead-free piezoelectric ceramics

Hongliang Du, Fusheng Tang, Fa Luo, Wancheng Zhou, Shaobo Qu, Zhibin Pei

School of Materials Sience and Engineering

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

55 Scopus citations

Abstract

Lead-free piezoelectric ceramics 0.94(K_0.5Na_0.5)NbO₃-0.06LiNbO₃ (abbreviated as KNLN6) have been synthesized by traditional ceramics process without cold-isostatic pressing. The phase behavior before poling and after poling was analyzed. The results show that the orthorhombic and tetragonal phase co-exist in KNLN6 ceramics. The effect of poling conditions on piezoelectric properties of KNLN6 ceramics was investigated. The physics mechanism was also discussed. The results show that the optimum poling condition for KNLN6 ceramics is poling electric field of 3.5 kV/mm, poling temperature of 120 °C and poling time of 30 min. Piezoelectric properties of KNLN6 ceramics under the optimum poling condition is piezoelectric constant d₃₃ of 215 pC/N, planar electromechanical coupling factor k_p of 0.38, thickness electromechanical coupling factor k_t of 0.48, and Curie temperature T_c of 450 °C, respectively. The results show that KNLN6 ceramics is an excellent candidate for lead-free piezoelectric ceramics.

Original language	English
Pages (from-to)	175-179
Number of pages	5
Journal	Materials Science and Engineering: B
Volume	137
Issue number	1-3
DOIs	https://doi.org/10.1016/j.mseb.2006.11.020
State	Published - 25 Feb 2007

Keywords

(KNa)NbO-LiNbO
Lead-free
Piezoelectric properties
Poling condition

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10.1016/j.mseb.2006.11.020

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title = "Effect of poling condition on piezoelectric properties of (K0.5Na0.5)NbO3-LiNbO3 lead-free piezoelectric ceramics",

abstract = "Lead-free piezoelectric ceramics 0.94(K0.5Na0.5)NbO3-0.06LiNbO3 (abbreviated as KNLN6) have been synthesized by traditional ceramics process without cold-isostatic pressing. The phase behavior before poling and after poling was analyzed. The results show that the orthorhombic and tetragonal phase co-exist in KNLN6 ceramics. The effect of poling conditions on piezoelectric properties of KNLN6 ceramics was investigated. The physics mechanism was also discussed. The results show that the optimum poling condition for KNLN6 ceramics is poling electric field of 3.5 kV/mm, poling temperature of 120 °C and poling time of 30 min. Piezoelectric properties of KNLN6 ceramics under the optimum poling condition is piezoelectric constant d33 of 215 pC/N, planar electromechanical coupling factor kp of 0.38, thickness electromechanical coupling factor kt of 0.48, and Curie temperature Tc of 450 °C, respectively. The results show that KNLN6 ceramics is an excellent candidate for lead-free piezoelectric ceramics.",

keywords = "(KNa)NbO-LiNbO, Lead-free, Piezoelectric properties, Poling condition",

author = "Hongliang Du and Fusheng Tang and Fa Luo and Wancheng Zhou and Shaobo Qu and Zhibin Pei",

year = "2007",

month = feb,

day = "25",

doi = "10.1016/j.mseb.2006.11.020",

language = "英语",

volume = "137",

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journal = "Materials Science and Engineering: B",

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T1 - Effect of poling condition on piezoelectric properties of (K0.5Na0.5)NbO3-LiNbO3 lead-free piezoelectric ceramics

AU - Du, Hongliang

AU - Tang, Fusheng

AU - Luo, Fa

AU - Zhou, Wancheng

AU - Qu, Shaobo

AU - Pei, Zhibin

PY - 2007/2/25

Y1 - 2007/2/25

N2 - Lead-free piezoelectric ceramics 0.94(K0.5Na0.5)NbO3-0.06LiNbO3 (abbreviated as KNLN6) have been synthesized by traditional ceramics process without cold-isostatic pressing. The phase behavior before poling and after poling was analyzed. The results show that the orthorhombic and tetragonal phase co-exist in KNLN6 ceramics. The effect of poling conditions on piezoelectric properties of KNLN6 ceramics was investigated. The physics mechanism was also discussed. The results show that the optimum poling condition for KNLN6 ceramics is poling electric field of 3.5 kV/mm, poling temperature of 120 °C and poling time of 30 min. Piezoelectric properties of KNLN6 ceramics under the optimum poling condition is piezoelectric constant d33 of 215 pC/N, planar electromechanical coupling factor kp of 0.38, thickness electromechanical coupling factor kt of 0.48, and Curie temperature Tc of 450 °C, respectively. The results show that KNLN6 ceramics is an excellent candidate for lead-free piezoelectric ceramics.

AB - Lead-free piezoelectric ceramics 0.94(K0.5Na0.5)NbO3-0.06LiNbO3 (abbreviated as KNLN6) have been synthesized by traditional ceramics process without cold-isostatic pressing. The phase behavior before poling and after poling was analyzed. The results show that the orthorhombic and tetragonal phase co-exist in KNLN6 ceramics. The effect of poling conditions on piezoelectric properties of KNLN6 ceramics was investigated. The physics mechanism was also discussed. The results show that the optimum poling condition for KNLN6 ceramics is poling electric field of 3.5 kV/mm, poling temperature of 120 °C and poling time of 30 min. Piezoelectric properties of KNLN6 ceramics under the optimum poling condition is piezoelectric constant d33 of 215 pC/N, planar electromechanical coupling factor kp of 0.38, thickness electromechanical coupling factor kt of 0.48, and Curie temperature Tc of 450 °C, respectively. The results show that KNLN6 ceramics is an excellent candidate for lead-free piezoelectric ceramics.

KW - (KNa)NbO-LiNbO

KW - Lead-free

KW - Piezoelectric properties

KW - Poling condition

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DO - 10.1016/j.mseb.2006.11.020

M3 - 文章

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Effect of poling condition on piezoelectric properties of (K_0.5Na_0.5)NbO₃-LiNbO₃ lead-free piezoelectric ceramics

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