Domain switching contribution to the ferroelectric, fatigue and piezoelectric properties of lead-free Bi0.5(Na0.85K0.15)0.5TiO3 films

被引：34

作者：

Chen, Jieyu ^{[1
,2
]}

Tang, Zhehong ^{[1
,2
]}

Tian, Ruonan ^{[1
,2
]}

Bai, Yulong ^{[1
,2
]}

Zhao, Shifeng ^{[1
,2
]}

Zhang, Hao ^{[3
]}

机构：

[1] Inner Mongolia Univ, Sch Phys Sci & Technol, Hohhot 010021, Peoples R China

[2] Inner Mongolia Univ, Inner Mongolia Key Lab Nanosci & Nanotechnol, Hohhot 010021, Peoples R China

[3] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA

来源：

RSC ADVANCES | 2016年 / 6卷 / 40期

基金：

中国国家自然科学基金;

关键词：

THIN-FILMS; DIELECTRIC-PROPERTIES; CERAMICS; SIZE; COEFFICIENTS; HYSTERESIS; TIP;

D O I：

10.1039/c6ra04262g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Lead-free Bi-0.5(Na0.85K0.15)(0.5)TiO3 films have been prepared via a solution-gelation technique. The microstructure, domain structure, ferroelectric, fatigue and piezoelectric properties were investigated systematically. This shows that the films have a single-phase perovskite structure and show outstanding ferroelectric, fatigue and piezoelectric properties at room temperature. The maximum piezoelectric coefficient value of the films reaches approximately 158.94 pm V-1, which is comparable to that of polycrystalline lead-based films. Thus good ferroelectric, fatigue and piezoelectric properties are attributed to the well-defined electrical domain structure and its switching for Bi-0.5(Na0.85K0.15)(0.5)TiO3 films. The present results suggest that Bi-0.5(Na0.85K0.15)(0.5)TiO3 films can be used as a candidate for lead-free films in piezoelectric micro-electro-mechanical systems.

引用

页码：33834 / 33842

页数：9

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