Abstract
The real part of the relative permittivity epsilon(r)' as well as the dielectric loss as represented by epsilon(r) '' for the compounds (CH2)(n)(NH3)(2)MCl4-xBrx (where x = 0, 2, n = 2, 3 and M = Cu Co) have been measured. The measurements were carried out as a function of temperature and frequency. Both epsilon(r)' and epsilon(r) '' show the same relaxation phenomena which involves large reorientable dipoles in the total polarization. The phase transition observed at similar to 312 K for epsilon(r)' and epsilon(r) '' is expected from the variation in the spacing between the adjacent metallic layers arising from the increase in the number of carbon atoms and/or introducing the Br- ions in the out of plane position.