Effects of Heat‐Treatment Temperature on the Properties of (1–x)(Na0.5Bi0.5)TiO3–xBiAlO3 Lead‐Free Piezoelectric Thin Films
Abstract
Lead‐free sodium bismuth titanate–aluminate bismuth [0.97(Na0.5Bi0.5)TiO3–0.03BiAlO3] solid‐solution films deposited on (100) Pt/TiO2/SiO2/Si substrates by a sol–gel process were pyrolyzed and annealed at different temperatures. The film annealed at 725°C with a pyrolysis temperature of 410°C exhibited the optimal electrical properties and excellent piezoelectric properties, with a remanent polarization 2Pr of 38 μC/cm2 and a leakage current density of 10−7–10−6 A/cm2 (E BNT‐BA films a viable lead‐free alternative to the lead‐based materials in such as biosensors and ultrasonic transducers.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 01, 2016
- Source ID
- 10.1111/jace.14116
Entities
People
- Peng Shi
- Xiaoqing Wu
- Yunqiang Yao
- Zuo‐guang Ye
Organizations
- Natural Sciences and Engineering Research Council
- Simon Fraser University