Conductivity and dielectric response in the ion-exchange intercalated mono- and double-layer hydrates Cd0.75PS3Na0.5(H2O)y, y = 1, 2

Jeevanandam, P. ; Vasudevan, S. (1998) Conductivity and dielectric response in the ion-exchange intercalated mono- and double-layer hydrates Cd0.75PS3Na0.5(H2O)y, y = 1, 2 Journal of Physical Chemistry B, 102 (17). pp. 3082-3089. ISSN 1520-6106

Full text not available from this repository.

Official URL: http://pubs.acs.org/doi/abs/10.1021/jp972945h

Related URL: http://dx.doi.org/10.1021/jp972945h

Abstract

Hydrated Na ions have been ion-exchange intercalated into the insulating layered cadmium thiophosphate to give Cd0.75PS3Na0.5(H2O)y. Intercalation occurs with a dilation of the lattice which depends on the extent of hydration of the interlamellar Na ion; for y = 1 the lattice expansion is 2.8 Å, while for y = 2 it is 5.5 Å. The conductivity and dielectric response of Cd0.75PS3Na0.5(H2O)y, y = 1, 2, have been investigated as a function of frequency and temperature. The electrical behavior of the two compounds is dramatically different. In the y = 2 compound Na ions are mobile and the material is conducting. The dielectric spectrum is featureless, but the electrical modulus, the reciprocal of the complex dielectric permittivity, exhibits a conductivity relaxation. In contrast, when y = 1, the compound is nonconducting, with the dielectric permittivity exhibiting a relaxation. The relaxation times and activation energy are comparable to that of the dielectric relaxation at acoustic frequencies in ice.

Item Type:Article
Source:Copyright of this article belongs to American Chemical Society.
ID Code:58439
Deposited On:31 Aug 2011 06:03
Last Modified:31 Aug 2011 06:03

Repository Staff Only: item control page