The large electro-strain in BNKT-BST-100xTa lead-free ceramics

Xiaohu Ren; Hongfeng Yin; Yun Tang; Huiqing Fan; Hudie Yuan

doi:10.1016/j.ceramint.2019.09.164

The large electro-strain in BNKT-BST-100xTa lead-free ceramics

Xiaohu Ren
, Hongfeng Yin
, Yun Tang
, Huiqing Fan
, Hudie Yuan

School of Materials Sience and Engineering

Xi'an University of Architecture and Technology

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

35 Scopus citations

Abstract

0.94Bi_0.5(Na_0.78K_0.22)_0.5Ti_1-xTa_xO₃-0.06Ba_0.95Sr_0.05TiO₃ (BNKT-BST-100xTa, for x = 0,0.005, 0.010, 0.015, 0.020 and 0.025) lead-free ceramics were fabricated by the solid-state reaction technique. Microstructure, dielectric, ferroelectric and fatigue performances of BNKT-BST-100xTa ceramics had been systemically studied. The XRD patterns confirmed that Ta⁵⁺ ions had completely dissolved into the lattice of BNKT-BST-100xTa ceramics. Meanwhile, the temperature of R3c-PNRs (T_s) was found to shift towards room temperature in dielectric permittivity curves with the introduction of Ta⁵⁺ ions. In addition, the highest unipolar strain of 0.32% with the corresponding normalized strain of 458 pm/V was obtained for x = 0.020 under the applied electric field of 70 kV/cm. The large electro-strain was cause by intrinsic effect of the crystal and the external electric field. Moreover, the excellent strain fatigue resistance indicated the prepared ceramics are promising candidates for actuators and stress sensors.

Original language	English
Pages (from-to)	1876-1882
Number of pages	7
Journal	Ceramics International
Volume	46
Issue number	2
DOIs	https://doi.org/10.1016/j.ceramint.2019.09.164
State	Published - 1 Feb 2020

Keywords

BNT-based ceramics
Fatigue
Ferroelectrics
Strain

Access to Document

10.1016/j.ceramint.2019.09.164

Cite this

@article{9fe2048f6a1043709c938acbb3541e03,

title = "The large electro-strain in BNKT-BST-100xTa lead-free ceramics",

abstract = "0.94Bi0.5(Na0.78K0.22)0.5Ti1-xTaxO3-0.06Ba0.95Sr0.05TiO3 (BNKT-BST-100xTa, for x = 0,0.005, 0.010, 0.015, 0.020 and 0.025) lead-free ceramics were fabricated by the solid-state reaction technique. Microstructure, dielectric, ferroelectric and fatigue performances of BNKT-BST-100xTa ceramics had been systemically studied. The XRD patterns confirmed that Ta5+ ions had completely dissolved into the lattice of BNKT-BST-100xTa ceramics. Meanwhile, the temperature of R3c-PNRs (Ts) was found to shift towards room temperature in dielectric permittivity curves with the introduction of Ta5+ ions. In addition, the highest unipolar strain of 0.32\% with the corresponding normalized strain of 458 pm/V was obtained for x = 0.020 under the applied electric field of 70 kV/cm. The large electro-strain was cause by intrinsic effect of the crystal and the external electric field. Moreover, the excellent strain fatigue resistance indicated the prepared ceramics are promising candidates for actuators and stress sensors.",

keywords = "BNT-based ceramics, Fatigue, Ferroelectrics, Strain",

author = "Xiaohu Ren and Hongfeng Yin and Yun Tang and Huiqing Fan and Hudie Yuan",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd and Techna Group S.r.l.",

year = "2020",

month = feb,

day = "1",

doi = "10.1016/j.ceramint.2019.09.164",

language = "英语",

volume = "46",

pages = "1876--1882",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd",

number = "2",

}

TY - JOUR

T1 - The large electro-strain in BNKT-BST-100xTa lead-free ceramics

AU - Ren, Xiaohu

AU - Yin, Hongfeng

AU - Tang, Yun

AU - Fan, Huiqing

AU - Yuan, Hudie

PY - 2020/2/1

Y1 - 2020/2/1

N2 - 0.94Bi0.5(Na0.78K0.22)0.5Ti1-xTaxO3-0.06Ba0.95Sr0.05TiO3 (BNKT-BST-100xTa, for x = 0,0.005, 0.010, 0.015, 0.020 and 0.025) lead-free ceramics were fabricated by the solid-state reaction technique. Microstructure, dielectric, ferroelectric and fatigue performances of BNKT-BST-100xTa ceramics had been systemically studied. The XRD patterns confirmed that Ta5+ ions had completely dissolved into the lattice of BNKT-BST-100xTa ceramics. Meanwhile, the temperature of R3c-PNRs (Ts) was found to shift towards room temperature in dielectric permittivity curves with the introduction of Ta5+ ions. In addition, the highest unipolar strain of 0.32% with the corresponding normalized strain of 458 pm/V was obtained for x = 0.020 under the applied electric field of 70 kV/cm. The large electro-strain was cause by intrinsic effect of the crystal and the external electric field. Moreover, the excellent strain fatigue resistance indicated the prepared ceramics are promising candidates for actuators and stress sensors.

AB - 0.94Bi0.5(Na0.78K0.22)0.5Ti1-xTaxO3-0.06Ba0.95Sr0.05TiO3 (BNKT-BST-100xTa, for x = 0,0.005, 0.010, 0.015, 0.020 and 0.025) lead-free ceramics were fabricated by the solid-state reaction technique. Microstructure, dielectric, ferroelectric and fatigue performances of BNKT-BST-100xTa ceramics had been systemically studied. The XRD patterns confirmed that Ta5+ ions had completely dissolved into the lattice of BNKT-BST-100xTa ceramics. Meanwhile, the temperature of R3c-PNRs (Ts) was found to shift towards room temperature in dielectric permittivity curves with the introduction of Ta5+ ions. In addition, the highest unipolar strain of 0.32% with the corresponding normalized strain of 458 pm/V was obtained for x = 0.020 under the applied electric field of 70 kV/cm. The large electro-strain was cause by intrinsic effect of the crystal and the external electric field. Moreover, the excellent strain fatigue resistance indicated the prepared ceramics are promising candidates for actuators and stress sensors.

KW - BNT-based ceramics

KW - Fatigue

KW - Ferroelectrics

KW - Strain

UR - https://www.scopus.com/pages/publications/85072383503

U2 - 10.1016/j.ceramint.2019.09.164

DO - 10.1016/j.ceramint.2019.09.164

M3 - 文章

AN - SCOPUS:85072383503

SN - 0272-8842

VL - 46

SP - 1876

EP - 1882

JO - Ceramics International

JF - Ceramics International

IS - 2

ER -

The large electro-strain in BNKT-BST-100xTa lead-free ceramics

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this