Ba(Ti0.96Sn0.04)O3陶瓷的物性研究

被引:0
|
作者
武燕庆
张家良
刘大康
孙丹丹
机构
[1] 山东大学物理学院晶体材料国家重点实验室
基金
国家自然科学基金重点项目;
关键词
Ba(Ti0.96Sn0.04)O3; 压电性能; 介电性能; 铁电性能; 微观结构;
D O I
暂无
中图分类号
TQ174.1 [基础理论];
学科分类号
摘要
采用传统固相反应法制备了Ba(Ti0.96Sn0.04)O3无铅压电陶瓷,对其压电性能、介电性能、铁电性能和微观结构等进行了研究。研究发现,原料以及制备工艺对Ba(Ti0.96Sn0.04)O3陶瓷的压电性质具有较大的影响。与Ba TiO3陶瓷相比,Ba(Ti0.96Sn0.04)O3陶瓷的正交–四方相变温度TO-T得到了一定的提高,并且TO-T附近的热滞只有1.8℃。陶瓷的微观形貌呈现出较为复杂的畴结构,主要以90°平行带状畴为主,偶尔有少量不同构型的180°畴。电滞回线呈现为理想的近似矩形饱和形状的曲线,剩余极化强度Pr为18.9μC/cm2,矫顽场Ec为2.5 k V/cm。此外,非180°畴的翻转是引起陶瓷逆压电常数d33*的主要因素,其值可达550 pm/V。
引用
收藏
页码:850 / 854
页数:5
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