%0 Journal Article
%T AC Conductivity of (As_2Te_3)_(100-x)Ge_x Bulk Glassy System
%A A-Abdel-All
%A <br>
%J 材料科学技术学报
%D 1998
%I 
%X The ac conductivity of the bulk amorphous chalcogenide system (As2Te3)100-xGex (where x=0,5,10,15 and 25 at. pct) was investigated at variable frequencies ranging from 50 Hz to 100 kHz and at different temperatures ranging from 3O to 160℃. lt was found that at a fixed temperature, where n <1 and decreases with temperature. The complex impedence Z was measured over the same frequency and temperature ranges. All samples give a semicircle arc originating at the origin point. This indicates that each composition can be described only by one resistance R and one capacity C, both parallelly combined. The centre below the real axis indicates the relaxation behaviour of the system. The activation energies for conduction were calculated.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=609F9EBC94138F16&yid=8CAA3A429E3EA654&vid=F3583C8E78166B9E&iid=38B194292C032A66&sid=002786F01A86D891&eid=1D01216AD76577EC&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=0