ELECTRICAL CONDUCTIVITIES OF SOME METAL SALT FILMS UNDER ANODIC CONDITIONS

Recently determined electrical conductivities of anodic AgCl, A1C1₃, TiBr₄, and MgCl₂ films are compared to well established conductivities of anodic Ta₂O₅; and A1₂O₃. All of these films exhibit high-field barrier layer condition. The exponential constant, β. is about the same value for the salts as for oxides but the preexponential constants and conductivities are orders of magnitude larger for the salts. The salts, AlCl₃, TiBr₄, and MgCl₂, in addition, have a series ohmic resistance which is attributed to an outer, continuously-forming and dissolving, hydrated salt layer.