COMPOSITION DEPENDENCE OF THE SOUND VELOCITY IN AG-SE SYSTEM: A STUDY BASED ON A VISCOELASTIC MODEL
Silver chalcogenides are superionic conductors which are characterized by their high ionic conductivity. Experimentally, it has been reported that the electronic properties of liquid Ag-Se system exhibits unusual behavior at the stoichiometric composition. The anomalous behavior has been also observed in the composition dependence of the ionic conductivity. On the other hand, in the measurement of the composition dependence of the sound velocity, no anomalous behavior has been detected. In this contribution, the sound velocity in Ag-Se system is examined by using the interpenetrating two fluid model of superionic melt. In particular, the effect of varying the Thomas-Fermi screening parameter on the sound velocity near the stoichiometric composition is considered. The model indicates that the sound velocity is affected by the value of the Thomas-Fermi screening parameter.
SAHARA MASARU ANIYA
Department of Physics, Graduate School of Science and Technology,Kumamoto University, Kurokami 2-39- Department of Physics, Graduate School of Science and Technology, Kumamoto University, Kurokami 2-39
国际会议
The 12th Asian Conference on Solid State Ionics(第十二届亚洲固态离子学会议暨第十五届中国固态离子学会议)
武汉
英文
416-422
2010-05-02（万方平台首次上网日期，不代表论文的发表时间）