The dielectric, piezoelectric and ferroelectric properties of LaAlO3-doped Bi0.5Na0.5TiO3-BaTiO3 lead-free piezoceramics

Fengmin Wu; Weipeng Lin; Junjun Wang; Chunxiao Zhang; Jinhui Fan

doi:10.1080/10584587.2018.1457331

The dielectric, piezoelectric and ferroelectric properties of LaAlO₃-doped Bi_0.5Na_0.5TiO₃-BaTiO₃ lead-free piezoceramics

Fengmin Wu^*
, Weipeng Lin
, Junjun Wang
, Chunxiao Zhang
, Jinhui Fan

^*Corresponding author for this work

School of Civil Engineering

Harbin University of Science and Technology

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

2 Scopus citations

Abstract

LaAlO₃-doped Bi_0.5Na_0.5TiO₃-BaTiO₃(BNT-BT) lead-free piezoelectric ceramics with compositions near the rhombohedral–tetragonal morphotropic phase boundary (MPB) were prepared and investigated. The introduction of LaAlO₃, which makes the ceramics samples avoid being fused, has a relatively large influence on the dielectric, piezoelectric and ferroelectric properties of BNT-BT ceramics. With the increase of doping concentration, these properties get weaker. But when the doping concentration of LaAlO₃ is 0.2 mol%, the remnant polarization (P_r) and coercive field (E_c) are better than those in pure 0.93BNT-0.07BT ceramics. The ferroelectric properties of this ceramics appear an eccentric enhancement and the domain switch becomes more easily.

Original language	English
Pages (from-to)	85-90
Number of pages	6
Journal	Integrated Ferroelectrics
Volume	190
Issue number	1
DOIs	https://doi.org/10.1080/10584587.2018.1457331
State	Published - 13 Jun 2018

Keywords

BNT-BT
LaAlO
doping concentration

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10.1080/10584587.2018.1457331

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title = "The dielectric, piezoelectric and ferroelectric properties of LaAlO3-doped Bi0.5Na0.5TiO3-BaTiO3 lead-free piezoceramics",

abstract = "LaAlO3-doped Bi0.5Na0.5TiO3-BaTiO3(BNT-BT) lead-free piezoelectric ceramics with compositions near the rhombohedral–tetragonal morphotropic phase boundary (MPB) were prepared and investigated. The introduction of LaAlO3, which makes the ceramics samples avoid being fused, has a relatively large influence on the dielectric, piezoelectric and ferroelectric properties of BNT-BT ceramics. With the increase of doping concentration, these properties get weaker. But when the doping concentration of LaAlO3 is 0.2 mol\%, the remnant polarization (Pr) and coercive field (Ec) are better than those in pure 0.93BNT-0.07BT ceramics. The ferroelectric properties of this ceramics appear an eccentric enhancement and the domain switch becomes more easily.",

keywords = "BNT-BT, LaAlO, doping concentration",

author = "Fengmin Wu and Weipeng Lin and Junjun Wang and Chunxiao Zhang and Jinhui Fan",

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year = "2018",

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doi = "10.1080/10584587.2018.1457331",

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T1 - The dielectric, piezoelectric and ferroelectric properties of LaAlO3-doped Bi0.5Na0.5TiO3-BaTiO3 lead-free piezoceramics

AU - Wu, Fengmin

AU - Lin, Weipeng

AU - Wang, Junjun

AU - Zhang, Chunxiao

AU - Fan, Jinhui

PY - 2018/6/13

Y1 - 2018/6/13

N2 - LaAlO3-doped Bi0.5Na0.5TiO3-BaTiO3(BNT-BT) lead-free piezoelectric ceramics with compositions near the rhombohedral–tetragonal morphotropic phase boundary (MPB) were prepared and investigated. The introduction of LaAlO3, which makes the ceramics samples avoid being fused, has a relatively large influence on the dielectric, piezoelectric and ferroelectric properties of BNT-BT ceramics. With the increase of doping concentration, these properties get weaker. But when the doping concentration of LaAlO3 is 0.2 mol%, the remnant polarization (Pr) and coercive field (Ec) are better than those in pure 0.93BNT-0.07BT ceramics. The ferroelectric properties of this ceramics appear an eccentric enhancement and the domain switch becomes more easily.

AB - LaAlO3-doped Bi0.5Na0.5TiO3-BaTiO3(BNT-BT) lead-free piezoelectric ceramics with compositions near the rhombohedral–tetragonal morphotropic phase boundary (MPB) were prepared and investigated. The introduction of LaAlO3, which makes the ceramics samples avoid being fused, has a relatively large influence on the dielectric, piezoelectric and ferroelectric properties of BNT-BT ceramics. With the increase of doping concentration, these properties get weaker. But when the doping concentration of LaAlO3 is 0.2 mol%, the remnant polarization (Pr) and coercive field (Ec) are better than those in pure 0.93BNT-0.07BT ceramics. The ferroelectric properties of this ceramics appear an eccentric enhancement and the domain switch becomes more easily.

KW - BNT-BT

KW - LaAlO

KW - doping concentration

UR - https://www.scopus.com/pages/publications/85051738880

U2 - 10.1080/10584587.2018.1457331

DO - 10.1080/10584587.2018.1457331

M3 - 文章

AN - SCOPUS:85051738880

SN - 1058-4587

VL - 190

SP - 85

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JO - Integrated Ferroelectrics

JF - Integrated Ferroelectrics

IS - 1

ER -

The dielectric, piezoelectric and ferroelectric properties of LaAlO₃-doped Bi_0.5Na_0.5TiO₃-BaTiO₃ lead-free piezoceramics

Abstract

Keywords

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