Research Letter

Ionic Conductivity and Phase Transition Behaviour in 4AgI-(1- 𝑥 ) P b I 2 -2 𝑥 CuI System

Table 1

Activation energies in the low and high temperature regions of 4 A g I - ( 1 - 𝑥 ) P b I 2 - 2 𝑥 C u I samples.

𝑥 /mole fractionActivation energies in prephase transition region/eVActivation energies in postphase transition region/eV

𝑥 = 0 0.2620.118
𝑥 = 0 . 1 0.4200.304
𝑥 = 0 . 2 0.4390.199
𝑥 = 0 . 3 0.4570.195
𝑥 = 0 . 4 0.4650.150