Dielectric and conducting behavior of gadolinium–terbium fumarate heptahydrate crystals  

作　　者：M.D.Shah B.Want 

机构地区：[1]Solid State Research Laboratory,Department of Physics University of Kashmir,Srinagar 190006,India

出　　处：《Journal of Advanced Dielectrics》2015年第3期19-26,共8页先进电介质学报（英文）

基　　金：The corresponding author B.Want is highly thankful to DST(SERB),Govt.of India for providing financial assis-tance under the major research project No.SR/S2/CMP-102/2012.

摘　　要：Gadolinium-terbium fumarate heptahydrate crystals were grown in silica gel by using single gel diffusion technique.The crystals were characterized by different physico-chemical techniques of characterization.Powder X-ray diffraction results showed that the grown material is purely crystalline in nature.Elemental analyses suggested the chemical formula of the compound to be Gd Tb(C_(4)H_(2)O_(4)_(3)·7H_(2)O.Energy dispersive X-ray analysis confirmed the presence of Gd and Tb in the title compound.The dielectric and conductivity studies of the grown compound were carried as function offrequency of applied field and the temperature.The grown material showed a dielectric anomaly which was correlated with its thermal behavior.The ac conductivity of the material showed Jonscher's power law behavior:σ(ω)=σ_(0)+Aω^(s),with a temperature-dependent power exponent s(<1).The conductivity was found to be a function of temperature and frequency.

关 键 词：Single crystal growth characterization mixed rare earth compound ionic conductivity 

分 类 号：O61[理学—无机化学]