Open AccessFerroelectric properties of Sr2Bi4Ti5O18 thin films prepared by sol-gel method
Author(s) -
Hong Fang,
Haitao Sun,
Jiangwei Zhu,
Xu Mao,
Xiaobing Chen
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.3086
Subject(s) - materials science , sol gel , ferroelectricity , thin film , nanotechnology , optoelectronics , dielectric
High quality Sr2Bi4Ti5O18 (SBTi) ferroelectric thin films on Pt/Ti/SiO2/Si(100) substrates were successfully prepared using the sol-gel method.The microstructure, ferroelectric properties and fatigue characteristics of SBTi thin films were investigated.The results show that the films with smooth surface are of single phase of SBTi and randomly oriented. The well-saturated ferroelectric hysteresis loops and the fatigue properties were obtained by hysteresis measurements using a metal-ferroelectric-metal structure. The remnant polarization (2Pr) and coercive field (2Ec) reached to 24.0μC/cm2 and 137.8kV/cm, respectcively in the electric field of 275kV/cm. No fatigue was observed up to 4.4×1010 switching cycles.