DC and AC Electrical Properties of Sr2-xLixFeMnO6 Compound

摘要：

　　The variations of dc conductivities (σr) of the Sr2-xLixFeMnO6 double perovskite system over a range of temperatures (100 ~ 300 K) and for several concentrations (0≤ x ≤ 0.4) of incorporated Li+ ions are well described by the equation σ =(B/T) exp(-Ea/kT) and show a decrease with decreasing temperature for a given doping.At a given temperature,σ tends to decrease with increasing x.The derived activation energy shows a gradual increase with x with a range of values that are lower than what is usually reported.The measured ac impedance is used to extract the relaxation frequencies as a function of composition and temperature.

作者: A.Sellai H.Widatallah O.A.Yassin M.Elzain

作者单位: Department of Physics,P.O Box 36,Sultan Qaboos University,123 Oman School of Physics & Applied Physics,El-Neelain University,Khartoum,11121 Sudan

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 150-153

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）