Abstract

In this paper the electrical conductivity behaviour in CdHgI₄ - CuI mixed system were investigated. The mixed system were prepared by mixing CdHgI₄ with CuI in different mol% (10:90, 20:80, 30:70, 40:60 and 50:50 ratios). It was observed that the conductivity of 10:90 CdHgI₄ – CuI mixed system were higher than the other system. This increase in conductivity is due to the availability of additional vacancies created by addition of CdHgI₄ in CuI, but above 10mol% CdHgI₄ the conductivity of mixed system decreased due to the reduction in the mobility of Cu⁺ ion following vacancy interactions. Activation energy data also suggested the higher conductivity for 10:90 mol% mixed system.

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