  Developing efficient, fast performing and thermally stable Silver iodide
based fast ion conducting solids are of great interest for resistive switching
applications, but still remain challenges. Metallization in bulk, behavior of
threshold voltage profile over composition and corrosion reactions are few of
these challenges. In this work, the switching behavior of bulk, fast ion
conducting, vitreous (AgI)x-(Ag2O)25-(MoO3)75-x, for 60 < x < 40 solids, has
been investigated, in order to understand the switching mechanism with theinert
electrodes. By using inert electrodes, the switching becomes irreversible,
memory type. The switching mechanism is electrochemical metallization process.
The inert electrodes restrain ionic mass transfer but exhibit low barrier to
electron transfer allowing the cathodic metallization reaction to reach Nernst
equilibrium faster. Cations involved in this process transport thorough the
free volume within the solid structure and follows Mott-Gurney model for
electric field driven thermally activated ion hopping conductivity model. This
model along with the thermal stability profile provide a narrow region within
composition with better switching performance based on swiftness to reach
threshold voltage and less power loss. Traces of anionic contribution to
metallization are absent. Moreover, anodic oxidation involves reactions that
cause bubble formation and corrosion.
