Abstract
Superionic conductors1 have been defined as solids with ion conductances exceeding 0.01 ohm−l cm−1. Invariably this occurs because an ion species in the solid begins diffusing away from its normal lattice position. Usually this ion species is one of the major constituents of the solid. Thus in AgI, all of the Ag+ ions are believed to diffuse at high temperature, while the I− stay in position to define a lattice. In CaF2, it is the F− which move. In usual ionic solids, the very small ionic conductivity is provided by impurities or occasional defects. We are interested in a quite different situation—where large scale disorder appears to be an intrinsic process. Thus the ionic conductivity is large, in part, because it is proportional to the density of diffusing ions. This can be very large—of the order of 1022 cm−3
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Mahan, G.D. (1976). Theoretical Issues in Superionic Conductors. In: Mahan, G.D., Roth, W.L. (eds) Superionic Conductors. Physics of Solids and Liquids. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-8789-7_10
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DOI: https://doi.org/10.1007/978-1-4615-8789-7_10
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