Phase Transitions in Ag₂CdI₄: Electrical Studies

Abstract

DC and AC electrical studies on bulk polycrystalline samples of Ag₂CdI₄ fast ionic conductor have been performed in the temperature range of 150–450 K. Below 300 K, the exponential temperature dependence of ionic conductivity was observed while electronic conductivity was found to undergo a step-wise change near T = 190 K. Model explanation of the low temperature behavior of σ is proposed. Detailed results of superionic phase transformation (around 380 K) investigations are reported and discussed.

Keywords:

• Phase transition
• superionic
• conductivity

PACS number(s):

• 05.70.Fh
• 51.50.+v
• 70.
• 72.20.−i