Dielectric properties of Co(CO₃)(H₂O)₂(C₃H₄N₂)₂ and [Co(C₃H₃N₂)₂]_n

Abstract

Dielectric relaxation phenomenon with non-Debye dynamics in Co(CO3)(H2O)2(C3H4N2)2 and [Co(C3H3N2)2]n, resembling the behaviour of ferroelectric relaxors is presumably connected with the charge carriers.

Investigation of the structural, optical, elastic and electrical properties of spinel LiZn2Fe3O8 nanoparticles annealed at two distinct temperatures

“…In this conduction type, the large-polaron wells at two sites are assumed to overlap, thus reducing the polaron hopping energy, which is given by: W H = W H0 (1 − r p / R ) where W H0 is associated with the activation energy, r p is the radius of a large polaron and R is the inter-site separation. The relation between the power parameter s and temperature for the OLPT mechanism is as follows: 60 where α is the spatial extent of the polaron, R ω is the hopping length at the angular frequency ω , k is the Boltzmann constant and T is the temperature. The higher values of activation energy in our case also support this argument.…”