Complex dielectric modulus and relaxation response at low microwave frequency region of dielectric ceramic Ba_(6-3x)Nd_(8+2x)Ti_(18)O_(54)

查看全文 作　　者：Chian Heng [1]Lee;Jumiah [1,2]Hassan;Mansor [2]Hashim;Raba'ah Syahidah [1,2]Aziz;Norlaily Mohd [1]Saiden 机构地区：[1]Department of Physics,Universiti Putra Malaysia 43400 Serdang Selangor,Malaysia;[2]Institute of Advanced Technology Universiti Putra Malaysia 43400 Serdang Selangor,Malaysia 出　　处：《Journal of Advanced Dielectrics》索引2014年第4卷第4期,共8页 基　　金：This research was financially supported from the Research University Grant Scheme(RUGS)Project No.:05-02-12-2180RU;Universiti Putra Malaysia(UPM).The authors also acknowledged the Department of Physics,Faculty of Science,UPM and Institute of Advanced Technology(ITMA),UPM. 摘　　要：The desirable characteristics of Ba_(6-3x)Nd_(8+2x)Ti_(18)O_(54)include high dielectric constant,low loss tangent,and high quality factor developed a new field for electronic applications.The microwave dielectric properties of Ba_(6-3x)Nd_(8+2x)Ti_(18)O_(54),with x?0:15 ceramics at different sintering temperatures(600–1300C)were investigated.The phenomenon of polarization produced by the applied electric field was studied.The dielectric properties with respect to frequency from 1MHz to 1.5 GHz were measured using Impedance Analyzer,and the results were compared and analyzed.The highest dielectric permittivity and lowest loss factor were defined among the samples.The complex dielectric modulus was evaluated from the measured parameters of dielectric measurement in the same frequency range,and used to differentiate the contribution of grain and grain boundary. 关 键 词：CERAMIC SINTERING dielectric response electrochemical impedance spectroscopy