Large transverse piezoelectric properties of lead-free Bi0.5(Na0.82K0.18)0.5TiO3 films

被引：8

作者：

Chae, Song A. ^{[1
]}

Won, Sung Sik ^{[1
]}

Seog, Hae Jin ^{[1
]}

Ullah, Aman ^{[2
]}

Ahn, Chang Won ^{[1
]}

Kim, Ill Won ^{[1
]}

机构：

[1] Univ Ulsan, Harvest Storage Res Ctr, Dept Phys & Energy, Ulsan 680749, South Korea

[2] Univ Sci & Technol, Dept Phys, Bannu, Khyber Pakhtunk, Pakistan

来源：

CURRENT APPLIED PHYSICS | 2016年 / 16卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

Lead-free; BNKT film; Transverse piezoelectric coefficient; CERAMICS; TEMPERATURE; COEFFICIENT; TOXICITY; BISMUTH; STRAIN; FIELD;

D O I：

10.1016/j.cap.2016.01.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The ferroelectric and piezoelectric properties of Bi-0.5(Na1-xKx)(0.5)TiO3 (x = 0, 0.18 and 0.25) films deposited on Pt(111)/TiO2/SiO2/Si(100) substrates using a chemical solution deposition technique were examined as part of an ongoing study into the development of lead-free piezoelectric films. The effective transverse piezoelectric coefficient (e(31,f)*) was examined to assess the potential applications of these piezoelectric films for device applications using the Bi-0.5(Na0.82K0.18)(0.5)TiO3 (BNKT18) cantilever, which is the morphotropic phase boundary composition in the Bi-0.5(Na1-xKx)(0.5)TiO3 system. The BNKT18 cantilever showed good linearity of piezoelectric displacement with low hysteresis under an applied field, and exhibited a high effective transverse piezoelectric coefficient (e(31,f)*) of similar to 5.15 C/m(2) and a figure of merit ((e(31,f)*)(2)/epsilon(0)epsilon(r)) of 3.8 GPa, which are comparable to the preferred oriented lead-free piezoelectric and lead zirconate titanate thin films. This suggests that the BNKT18 film is a potential candidate for lead-free piezoelectric film devices. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：429 / 434

页数：6

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