Effect of lanthanum doping on the structural, ferroelectric, and strain properties of Bi1/2(Na0.82K0.18)1/2TiO3 lead-free ceramics

Thi Hinh Dinh; Hyun Young Lee; Chang Ho Yoon; Rizwan Ahmed Malik; Young Min Kong; Jae Shin Lee; Vu Diem Ngoc Tran

doi:10.3938/jkps.62.1004

Effect of lanthanum doping on the structural, ferroelectric, and strain properties of Bi_1/2(Na_0.82K_0.18)_1/2TiO₃ lead-free ceramics

Thi Hinh Dinh, Hyun Young Lee, Chang Ho Yoon, Rizwan Ahmed Malik, Young Min Kong, Jae Shin Lee, Vu Diem Ngoc Tran

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

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Abstract

To clarify the effect of A-site donor doping on the phase transition and the strain enhancement, we investigated the crystal structure, as well as the piezoelectric, ferroelectric and electric-field-induced strain (EFIS) properties of La-doped Bi_1/2(Na_{0. 82}K_{0. 18})_1/2TiO₃ (BNKT) ceramics. Similarly to our previous studies on BNKT doped with B-site donors such as Nb and Ta, La doping was found to induce a ferroelectric-to-nonpolar (FE-NP) phase transition, leading to a large enhancement in EFIS just after the transition. The result provides strong evidence that a close relationship exists between the Goldschumidt's tolerance factor and the FE-NP transition in BNKT, which has been observed in B-site-donor or isovalent impurity-doped BNKT.

Original language	English
Pages (from-to)	1004-1008
Number of pages	5
Journal	Journal of the Korean Physical Society
Volume	62
Issue number	7
DOIs	https://doi.org/10.3938/jkps.62.1004
State	Published - 2013
Externally published	Yes

Keywords

Bismuth sodium titanate
Electric-field-induced strain
La doping
Lead-free piezoelectric
Relaxor

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10.3938/jkps.62.1004

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title = "Effect of lanthanum doping on the structural, ferroelectric, and strain properties of Bi1/2(Na0.82K0.18)1/2TiO3 lead-free ceramics",

abstract = "To clarify the effect of A-site donor doping on the phase transition and the strain enhancement, we investigated the crystal structure, as well as the piezoelectric, ferroelectric and electric-field-induced strain (EFIS) properties of La-doped Bi1/2(Na0. 82K0. 18)1/2TiO3 (BNKT) ceramics. Similarly to our previous studies on BNKT doped with B-site donors such as Nb and Ta, La doping was found to induce a ferroelectric-to-nonpolar (FE-NP) phase transition, leading to a large enhancement in EFIS just after the transition. The result provides strong evidence that a close relationship exists between the Goldschumidt's tolerance factor and the FE-NP transition in BNKT, which has been observed in B-site-donor or isovalent impurity-doped BNKT.",

keywords = "Bismuth sodium titanate, Electric-field-induced strain, La doping, Lead-free piezoelectric, Relaxor",

author = "Dinh, \{Thi Hinh\} and Lee, \{Hyun Young\} and Yoon, \{Chang Ho\} and Malik, \{Rizwan Ahmed\} and Kong, \{Young Min\} and Lee, \{Jae Shin\} and Tran, \{Vu Diem Ngoc\}",

year = "2013",

doi = "10.3938/jkps.62.1004",

language = "English",

volume = "62",

pages = "1004--1008",

journal = "Journal of the Korean Physical Society",

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TY - JOUR

T1 - Effect of lanthanum doping on the structural, ferroelectric, and strain properties of Bi1/2(Na0.82K0.18)1/2TiO3 lead-free ceramics

AU - Dinh, Thi Hinh

AU - Lee, Hyun Young

AU - Yoon, Chang Ho

AU - Malik, Rizwan Ahmed

AU - Kong, Young Min

AU - Lee, Jae Shin

AU - Tran, Vu Diem Ngoc

PY - 2013

Y1 - 2013

N2 - To clarify the effect of A-site donor doping on the phase transition and the strain enhancement, we investigated the crystal structure, as well as the piezoelectric, ferroelectric and electric-field-induced strain (EFIS) properties of La-doped Bi1/2(Na0. 82K0. 18)1/2TiO3 (BNKT) ceramics. Similarly to our previous studies on BNKT doped with B-site donors such as Nb and Ta, La doping was found to induce a ferroelectric-to-nonpolar (FE-NP) phase transition, leading to a large enhancement in EFIS just after the transition. The result provides strong evidence that a close relationship exists between the Goldschumidt's tolerance factor and the FE-NP transition in BNKT, which has been observed in B-site-donor or isovalent impurity-doped BNKT.

AB - To clarify the effect of A-site donor doping on the phase transition and the strain enhancement, we investigated the crystal structure, as well as the piezoelectric, ferroelectric and electric-field-induced strain (EFIS) properties of La-doped Bi1/2(Na0. 82K0. 18)1/2TiO3 (BNKT) ceramics. Similarly to our previous studies on BNKT doped with B-site donors such as Nb and Ta, La doping was found to induce a ferroelectric-to-nonpolar (FE-NP) phase transition, leading to a large enhancement in EFIS just after the transition. The result provides strong evidence that a close relationship exists between the Goldschumidt's tolerance factor and the FE-NP transition in BNKT, which has been observed in B-site-donor or isovalent impurity-doped BNKT.

KW - Bismuth sodium titanate

KW - Electric-field-induced strain

KW - La doping

KW - Lead-free piezoelectric

KW - Relaxor

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U2 - 10.3938/jkps.62.1004

DO - 10.3938/jkps.62.1004

M3 - Article

AN - SCOPUS:84876444815

SN - 0374-4884

VL - 62

SP - 1004

EP - 1008

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - 7

ER -

Effect of lanthanum doping on the structural, ferroelectric, and strain properties of Bi_1/2(Na_0.82K_0.18)_1/2TiO₃ lead-free ceramics

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Keywords

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