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(Ba1-xSrx)TiO3介电常数与温度、频率的关系
Relations of (Ba1-x) Srx) TiO3 dielectric constant with temperature and frequency
【摘要】 分析了影响 (Ba1-xSrx)TiO3 陶瓷材料介电特性的诸因素 ,从温度依赖、频率响应两个方面 ,对BST陶瓷材料的介电常数进行了研究 .在进行频率特性的测试中 ,选取x =0 .3 5的BST材料 ,即 (Ba0 .65Sr0 .3 5)TiO3 ,测得不同晶粒度下的介电常数随频率的变化曲线 .在进行温度特性的测试中 ,测量了不同晶粒度的BST材料介电常数与温度变化的关系 ,并绘制了关系曲线
【Abstract】 The property of (Ba 1- x Sr x )TiO 3 ceramic and the relevant theory were analyzed. the temperature dependence and frequency response were discussed. As to the frequency response, x =0.35, that is (Ba 0.65 Sr 0.35 )TiO 3 was selected as the test sample. With different grain size, there was a corresponding dielectric constant. The curve of ε Hz was shown according to their relationship. As to the temperature, the curve of ε T was given in test result.
【关键词】 (Ba1-xSrx)TiO3;
介电常数;
相变展宽;
晶粒度;
【Key words】 Ba 1- x Sr x )TiO 3; dielectric constant; transition broadening; grain size;
【Key words】 Ba 1- x Sr x )TiO 3; dielectric constant; transition broadening; grain size;
【基金】 国防科技电子预研基金资助项目
- 【文献出处】 华中科技大学学报(自然科学版) ,Journal of Huazhong University of Science and Technology , 编辑部邮箱 ,2003年03期
- 【分类号】O487
- 【被引频次】6
- 【下载频次】514