Cu注入 PTC BaTiO_3 陶瓷的复阻抗谱研究  

Study on Complex Impedance Spectroscopy of PTC BaTiO 3 Ceramics Implanted with Cu Ions

作　　者：杜慧玲[1] 王国梅[1] 雷家珩[1] 

机构地区：[1]武汉工业大学材料学院

出　　处：《功能材料》1997年第5期495-499,共5页Journal of Functional Materials

基　　金：清华大学新型陶瓷与精细工艺国家重点实验室资助

摘　　要：对传统工艺法制备的ＢａＴｉＯ３陶瓷进行了Ｃｕ元素的离子注入。在较宽的频率范围内和不同温度下对样品进行了阻抗测量，确定了样品的等效电路。根据阻抗谱分析了Ｃｕ注入ＢａＴｉＯ３多晶陶瓷的晶粒、晶界电阻与温度的关系。结果表明，选择合适的注入剂量的样品，其ＰＴＣ性能优于非注入样品。Cu ions were implanted into BaTiO 3 ceramics prepared by the anventional ceramic preparation technique. Impedance measurement over a wide range of frequency had been used to distinguish between the grain and grain boundary resistance of specimens. An appropriate equivalent circuit had been proposed. The resistance, capacitance of grain and grain boundary for specimens were analysed and the dependance of resistance on temperature was discussed in terms of complex impedance plots. It's found that BaTiO 3 ceramics implanted by Cu ions at the appropriate dose were obviously superior to the unimplanted specimen.

关 键 词：半导体陶瓷 PTC 离子注入 钛酸钡 阻抗谱 

分 类 号：TM283.01[一般工业技术—材料科学与工程]