Pressure driven depolarization behavior of Bi0.5Na0.5TiO3 based lead-free ceramics

Zhen Liu; Weijun Ren; Hengchang Nie; Ping Peng; Yun Liu; Xianlin Dong; Fei Cao; Genshui Wang

doi:10.1063/1.4984088

Pressure driven depolarization behavior of Bi_0.5Na_0.5TiO₃ based lead-free ceramics

Zhen Liu, Weijun Ren, Hengchang Nie, Ping Peng, Yun Liu^*, Xianlin Dong, Fei Cao, Genshui Wang

^*Corresponding author for this work

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

27 Citations (Scopus)

Abstract

Pressure driven depolarization behavior has been widely investigated for its scientific significance and practical applications. However, previous related studies were all based on lead-containing ferroelectric (FE) materials leading to detrimental environmental concerns. In the present work, we report the pressure driven depolarization behavior in Bi-based lead-free 0.97[(1-x)Bi_0.5Na_0.5TiO₃-xBiAlO₃)]-0.03K_0.5Na_0.5NbO₃ (BNT-x) ceramics. Particularly, with increasing hydrostatic pressure from 0 MPa to 495 MPa, the remanent polarization of BNT-0.04 decreases from 30.7 μC/cm² to 8.2 μC/cm², reducing ∼73% of its initial value. The observed depolarization phenomenon is associated with the pressure induced polar FE-nonpolar relaxor phase transition. The results reveal BNT based ceramics as promising lead free candidates for mechanical-electrical energy conversion applications based on the pressure driven depolarization behavior.

Original language	English
Article number	212901
Journal	Applied Physics Letters
Volume	110
Issue number	21
DOIs	https://doi.org/10.1063/1.4984088
Publication status	Published - 22 May 2017

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title = "Pressure driven depolarization behavior of Bi0.5Na0.5TiO3 based lead-free ceramics",

abstract = "Pressure driven depolarization behavior has been widely investigated for its scientific significance and practical applications. However, previous related studies were all based on lead-containing ferroelectric (FE) materials leading to detrimental environmental concerns. In the present work, we report the pressure driven depolarization behavior in Bi-based lead-free 0.97[(1-x)Bi0.5Na0.5TiO3-xBiAlO3)]-0.03K0.5Na0.5NbO3 (BNT-x) ceramics. Particularly, with increasing hydrostatic pressure from 0 MPa to 495 MPa, the remanent polarization of BNT-0.04 decreases from 30.7 μC/cm2 to 8.2 μC/cm2, reducing ∼73% of its initial value. The observed depolarization phenomenon is associated with the pressure induced polar FE-nonpolar relaxor phase transition. The results reveal BNT based ceramics as promising lead free candidates for mechanical-electrical energy conversion applications based on the pressure driven depolarization behavior.",

author = "Zhen Liu and Weijun Ren and Hengchang Nie and Ping Peng and Yun Liu and Xianlin Dong and Fei Cao and Genshui Wang",

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T1 - Pressure driven depolarization behavior of Bi0.5Na0.5TiO3 based lead-free ceramics

AU - Liu, Zhen

AU - Ren, Weijun

AU - Nie, Hengchang

AU - Peng, Ping

AU - Liu, Yun

AU - Dong, Xianlin

AU - Cao, Fei

AU - Wang, Genshui

PY - 2017/5/22

Y1 - 2017/5/22

N2 - Pressure driven depolarization behavior has been widely investigated for its scientific significance and practical applications. However, previous related studies were all based on lead-containing ferroelectric (FE) materials leading to detrimental environmental concerns. In the present work, we report the pressure driven depolarization behavior in Bi-based lead-free 0.97[(1-x)Bi0.5Na0.5TiO3-xBiAlO3)]-0.03K0.5Na0.5NbO3 (BNT-x) ceramics. Particularly, with increasing hydrostatic pressure from 0 MPa to 495 MPa, the remanent polarization of BNT-0.04 decreases from 30.7 μC/cm2 to 8.2 μC/cm2, reducing ∼73% of its initial value. The observed depolarization phenomenon is associated with the pressure induced polar FE-nonpolar relaxor phase transition. The results reveal BNT based ceramics as promising lead free candidates for mechanical-electrical energy conversion applications based on the pressure driven depolarization behavior.

AB - Pressure driven depolarization behavior has been widely investigated for its scientific significance and practical applications. However, previous related studies were all based on lead-containing ferroelectric (FE) materials leading to detrimental environmental concerns. In the present work, we report the pressure driven depolarization behavior in Bi-based lead-free 0.97[(1-x)Bi0.5Na0.5TiO3-xBiAlO3)]-0.03K0.5Na0.5NbO3 (BNT-x) ceramics. Particularly, with increasing hydrostatic pressure from 0 MPa to 495 MPa, the remanent polarization of BNT-0.04 decreases from 30.7 μC/cm2 to 8.2 μC/cm2, reducing ∼73% of its initial value. The observed depolarization phenomenon is associated with the pressure induced polar FE-nonpolar relaxor phase transition. The results reveal BNT based ceramics as promising lead free candidates for mechanical-electrical energy conversion applications based on the pressure driven depolarization behavior.

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JF - Applied Physics Letters

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M1 - 212901

ER -

Pressure driven depolarization behavior of Bi_0.5Na_0.5TiO₃ based lead-free ceramics

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