Comparative Study of the Electrical Properties in 8LiTaO3-SiO2 and 2LiNbO3-SiO2 Glass Systems
We present a comparative study of the electrical properties for two different glass systems, 8LiTaO3SiO2 (LTSO) and 2LiNbO3-SiO2 (LNSO). Samples were prepared by using a twin-roller quenching method. An impedance/gain-phase analyzer was used to characterize the electrical properties. The frequency was varied from 100 Hz to 15 MHz, and the highest temperature reached was 500 ℃. The observed values of the conductivity were very high for both LTSO and LNSO glasses. The frequency dependence of the electrical data was analyzed in the frameworks of Jonschers power law and the complex impedance formula. The value of dielectric loss in LNSO sample was observed to be larger than that in LTSO glass, but the peak frequency of the LTSO glass shifted to a higher frequency than that of LNSO glass at a given temperature. We found that the NbO3 component in LNSO glass was loosely bound to the Li cation to activate its motion of hopping through the system at high temperatures.
Glass Power law Complex impedance Ionic conductivity Activation energy
Y. H. Kim S. M. Lee C. H. Song Y. S. Yang Y. H. Rim
Department of Nano Fusion Technology, Pusan National University, Busan 609-735, Korea School of Liberal Arts, Semyung University, Chechon 390-711, Korea
国际会议
首尔
英文
612-615
2010-02-07（万方平台首次上网日期，不代表论文的发表时间）