Composition dependence of ferroelectric and piezoelectric properties of epitaxial (1-x)Ba(Zr0.2Ti0.8)O3-x(Ba0.7Ca0.3)TiO3 thin films prepared by pulsed laser deposition

被引：16
作者：
Lin, Q. R. [1 ]
Wang, D. Y. [1 ]
Luo, B. C. [1 ]
Ding, R. [1 ]
Lorenzen, D. L. [1 ]
Li, S. [1 ]
机构：
[1] Univ New S Wales, Sch Mat Sci & Engn, Kensington, NSW 2052, Australia
来源：
APPLIED SURFACE SCIENCE | 2015年 / 331卷
基金：
澳大利亚研究理事会; 中国国家自然科学基金;
关键词：
BZT-xBCT thin film; Composition dependence; Piezoelectric; Pulsed laser deposition; DIELECTRIC-PROPERTIES; ELECTRICAL-PROPERTIES;
D O I：
10.1016/j.apsusc.2015.01.100
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Lead-free (1 - x)Ba(Zr0.2Ti0.8)O-3-x(Ba0.7Ca0.3)TiO3 (BZT-xBCT) (x=0.3, 0.4, 0.5, 0.6, 0.7) thin films were deposited on SrRuO3 (SRO)-electroded (001)-oriented SrTiO3 (STO) single crystal substrates by pulsed laser deposition (PLD). X-ray diffraction and selected area electron diffraction (SAED) patterns verified epitaxial growth for all the thin films. High ferroelectric activities were evidenced by the well-defined polarization-electric field hysteresis loops. Both structural and physical properties of the thin films demonstrated a strong composition dependence and an MPB-like behaviour was found at around x=0.5, which is in agreement with that of its bulk counterparts. The superior ferroelectric and piezoelectric responses were attained at x=0.5 with remanent polarization P-r of 17.8 mu C/cm(2) and piezoelectric coefficient d(33) of 100 +/- 5 pm/V. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：477 / 481
页数：5
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