硅酸盐学报2013，Vol.41Issue(4)：432-436,5.DOI:10.7521/j.issn.0454-5648.2013.04.02
纳米晶钛酸钡陶瓷铁电性能和介电性能的温度依赖性
Temperature Dependence on the Dielectric and Ferroelectric Properties of Nanocrystalline BaTiO3 Ceramics
摘要
Abstract
The temperature dependence on the dielectric and ferroelectric properties of dense BaTiO3 ceramic with the nanocrystallines of 50 nm was investigated.The relationship between the dielectric constant and loss tangent with respect to temperature effect was analyzed,and a significant diffuse phase transition was observed.The dispersion parameter was calculated to be 1.60 at 1 kHz.The dielectric constant-electric field (ε-E) loops at different temperatures showed that the permittivity anomalies occurred in a temperature range of 110-120 ℃.The dielectric constant tunability was 20.2％ at 110 ℃,and the dielectric loss tangent was ＜0.02.Moreover,the positive piezoelectric coefficient d33 of 45 pm/V was determined from the slope of the loops.关键词
纳米晶钛酸钡陶瓷/铁电性/弥散相变/压电系数Key words
nanocrystalline barium titanate ceramic/ ferroelectricity/ diffuse phase transition/ piezoelectric coefficient分类
信息技术与安全科学引用本文复制引用
刘佳,杨仁波,邓湘云,谭忠文,李德军,王晓慧,李龙土..纳米晶钛酸钡陶瓷铁电性能和介电性能的温度依赖性[J].硅酸盐学报,2013,41(4):432-436,5.基金项目
国家"863"计划(2012AA03A610) （2012AA03A610）
国家"973"计划(2002-CB613301) （2002-CB613301）
国家自然科学基金(50872093)资助项目. （50872093）
