The presence of a thermally reversing window in Al-Te-Si glasses revealed by alternating differential scanning calorimetry and electrical switching studies |
| |
Authors: | M. Anbarasu S. Asokan |
| |
Affiliation: | a Department of Instrumentation, Indian Institute of Science, Bangalore 560012, India b Advanced Technology Center, Applied Materials, Santa Clara, CA 95052-8039, USA |
| |
Abstract: | Alternating differential scanning calorimetric (ADSC) studies and electrical switching experiments have been undertaken on Al15Te85−xSix (2 ? x ? 12) system of glasses. These glasses are found to exhibit two crystallization reactions (Tc1 and Tc2), for compositions with x < 8. Above x = 8, a single-stage crystallization is seen. Further, a trough is seen in the composition dependence of non-reversing enthalpy (ΔHNR), based on which it is proposed that there is a thermally reversing window in Al15Te85−xSix glasses, in the composition range 4 ? x ? 8. Electrical switching studies indicate that Al15Te85−xSix glasses exhibit a threshold type electrical switching at ON state currents less than 2 mA. Further, the switching voltages are found to increase with the increase in silicon content. It is interesting to note that the start (x = 4) and the end (x = 8) of the thermally reversing window are exemplified by a kink and a saturation in the composition dependence of switching voltages, respectively. |
| |
Keywords: | 65.60.+a 73.61.Jc 77.80.Fm |
本文献已被 ScienceDirect 等数据库收录! |
|