Reversible Conductivity Transformations in Chalcogenide Alloy Films
Certain amorphous chalcogenide alloys, such as Ge15Te85, exhibit metastable conductivity. These reversible structural changes in amorphous alloys entailing variation in order and conductivity have been made the basis of memory devices.(1) In this paper, we present our observations on induced conductivity transformation from one state to another. Because the conductivity involves structural changes in the bulk we relate our results to those obtained from calorimetric (2) and structural investigation (3) on the same materials. We also present measurements on the electrical characteristics of memory switches.
KeywordsThreshold Voltage Amorphous Alloy Conductive State High Resistance State Memory Material
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