NaBiTi6O(14)电子陶瓷的制备与阻抗分析  

The preparation of NaBiTi_6O_(14) electronic ceramics and impedance analysis

作　　者：陈勇[1,2] 张灿灿[1,2] 黄镇[1,2] 卞梦云 陈琪[1,2] 徐玲芳[1,2] 曹万强[1,2,3] 

机构地区：[1]有机化工新材料湖北省协同创新中心,湖北武汉430062 [2]湖北大学物理与电子科学学院,铁电压电材料与器件湖北省重点实验室,湖北武汉430062 [3]湖北大学材料科学与工程学院,湖北武汉430062

出　　处：《湖北大学学报（自然科学版）》2017年第1期36-40,共5页Journal of Hubei University：Natural Science

基　　金：湖北省教育厅重点科研项目(D2016006)资助

摘　　要：采用传统的固相反应法制备陶瓷样品,XRD衍射分析测得样品的相组成,通过阻抗谱测试样品的阻抗Z*,利用阻抗谱LCR方法测试得出材料的介电常数εr、介电损耗tanδ与温度和频率的关系;通过计算得出NaBiTi_6O_(14)的活化能值.结果表明在950℃预烧、1100℃与1150℃烧结下,介电损耗tanδ为10-2数量级;阻抗谱测试显示的两组样品的Z*图,实部的最大值都大于104Ω,由Z*图计算所得的活化能均大于1eV.结果显示,NaBiTi_6O_(14)是一种适合于高温高频的介质材料.We uses the traditional solid-state reaction method to prepare the ceramic samples. The result of XRD displays the composition of the sample;the value of impedance Z^＊can be got by impedance spectroscopy measure;the changing curve of permittivityεr and dielectric loss （ tanδ） with the temperature changing under different frequency can be obtained through spectroscopy LCR measure methods;the value of activation energy can be got by calculating. The result shows that in 950 ℃calcining, 1 100 ℃ and 1 150 ℃ sintering, dielectric loss （ tanδ） is 10 ^-2 orders of magnitude. Impedance spectroscopy measure shows that the two groups of samples Z^＊plots, the maximum real part is more than 10^4Ω, the values of activation energy are more than 1 eV,calculated by the Z^＊ plots. Results show that the NaBiTi6 O14 is a kind of suitable for high temperature and high frequency dielectric materials.

关 键 词：NBT NaBiTi6O14 介电常数 介电损耗 活化能 

分 类 号：TM28[一般工业技术—材料科学与工程] TN304.82[电气工程—电工理论与新技术]