Thin film Al/Sb2Pb1Se7/Al metal-glass-metal sandwiched structures prepared
using thermal evaporation technique have been studied. The I-V measurements
showed that the devices switched from high resistance 'OFF' state to a low
resistance 'ON' state when a particular voltage appeared across it. The 'O
FF' state I-V characteristics showed nonohmic behaviour while in the 'ON' s
tate the devices displayed purely linear characteristics. The switching vol
tage (Vth) was found to depend on film thickness and temperature of the dev
ice. A linear relation between V-th and temperature was observed.