PZT9505型陶瓷介电谱表征  

Dielectric spectrum characterization for PZT9505 ceramic

作　　者：张超[1] 未治奎[1] 余大书[1] 

机构地区：[1]天津师范大学物理与电子信息学院,天津300389

出　　处：《武汉工程大学学报》2011年第4期65-68,共4页Journal of Wuhan Institute of Technology

摘　　要：通过对溶胶-凝胶法制备的PZT9505陶瓷进行介电谱测试,包括介电温度谱,介电频谱,同时测量其漏电流偏压关系曲线,结果显示：溶胶凝胶方法有利于精确控制材料组分,样品介电常数较大（103~104量级）且在较大温度范围内比较稳定,优越于传统固相合成方法,在电工频率范围内存在压电效应,有利于工业应用,样品的介电弛豫不是典型德拜弛豫,属于极化弛豫的多体模型.PZT9505 ceramic made by Sol-Gel process was tested by dielectric spectrum including the dielectric spectrums for temperature and frequency,leakage current under bias voltage,respectively,the results showed that the Sol-Gel method could control the composition accurately compared with the traditional solid phase synthesis method,the sample has large and stable dielectric constants（103~104） in the large temperature range and piezoelectric effect occurred in electrical frequency range for industrial application.The dielectric relaxation for the sample is not typical Debye model but the many-body model on relaxation polarization.

关 键 词：溶胶凝胶 反铁电 介电谱 多体模型 

分 类 号：TB332[一般工业技术—材料科学与工程]