The Frequency Dependence of the Conductivity and Dielectric Relaxation of [(CH₂)₃(NH₃)₂]Cu(II)Cl₄

Abstract

The structural, dielectric and conductive properties of [(CH 2 ) 3 (NH 3 ) 2 ]Cu(II)Cl 4 have been studied. The material shows an order-disorder transition at T 1 = (333±2) K and a ferroelectric phase transitions at T 2 = (434±3) K. Results of differential thermal analysis, infrared spectroscopy, X-ray diffraction, AC conductivity and permittivity measurements are reported and discussed. The conductivity results are interpreted in terms of barrier hopping at low and intermediate temperatures, and band-type conduction at high temperatures. - PACS: 81.05.-t, 77.22.-d