Zn_2SnO_4掺杂对BaTiO_3陶瓷介电性能的影响  

On the dielectirc properties of Zn_2SnO_4 doped BaTiO_3 ceramics

作　　者：周亚鹏[1] 周锋子[1] 臧国忠[1] 王银强[1] 董元浩 李立本[1,2] 

机构地区：[1]河南科技大学物理与工程学院,河南洛阳471003 [2]南京大学固体微结构物理国家重点实验室,南京210000

出　　处：《功能材料》2014年第7期7039-7041,共3页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50972056;11104138)

摘　　要：用固相反应法分别合成了 Zn2 SnO 4、Ba-TiO 3粉体,用传统陶瓷制备工艺制备了 Zn2 SnO 4掺杂的 BaTiO 3陶瓷（ZS-BT）,研究了掺杂量变化对 Ba-TiO 3陶瓷介电性能的影响。研究发现,适量的Zn2 SnO 4掺杂可促进 BaTiO 3陶瓷的烧结,降低 Ba-TiO 3陶瓷的介电损耗；随着掺杂量的增加,BaTiO 3陶瓷的介电居里峰逐渐降低弥散,并向低温方向移动；在测量频率范围内（102~109 Hz）,Zn2 SnO 4掺杂使得介温曲线在40~125℃温度区间内变得平坦,当Zn2 SnO 4的掺杂比例为2％时,介电常数变化率低于8％。这些结果表明,ZS-BT 陶瓷对研究温度稳定性良好的陶瓷电容器有着重要的意义。Zn2 SnO 4 and BaTiO 3 powers were synthesized via the solid state reaction,respectively.Zn2 SnO 4 doped BaTiO 3 ceramics （ZS-BT）were prepared via traditional ceramic preparation process and their dielectric proper-ties were studied.The results show that doping appropriate amount of Zn2 SnO 4 could promote the ceramic sin-tering,reduce the dielectric loss;With increasing Zn2 SnO 4 content,the curie peak of dielectric-temperature spectra for BaTiO 3 ceramics were depressed and shifted to low temperature;In the temperature range of 40-125℃,the dielectric-temperature spectra （10 2 -10 9 Hz）get flat and the BaTiO 3 ceramics doped with 2% Zn2 SnO 4 exhibits a lowest dielectric constant change rate of less than 8%.These results suggest that ZS-BT ceramics has an important significance for researching temperature-stable ceramic capacitor materials.

关 键 词：钛酸钡 锡酸锌 介电性能 

分 类 号：TM28[一般工业技术—材料科学与工程]