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Please use this identifier to cite or link to this item: http://purl.org/purl/2659

Title: Electrical conductivity, dielectric properties and phase transition in ethylenediammonium sulphate single crystals
Authors: Santhakumari, N C
Vallabhan, C P G
Keywords: Ethylenediammonium sulphate
electrical conductivity
dielectric constant
phase transition
protonic conduction
Issue Date: May-1992
Publisher: Elsevier
Abstract: D.C. and a.c. electrical conductivities, dielectric constant and dielectric loss factor in single crystals of ethylenediammonium sulphate, (H3NCH2CH2NH3)(SO4), have been measured axiswise as a function of temperature. Anomalous variations in all the above properties at 480 K indicate the occurrence of a phase transition in the above material at this temperature. The existence of such a phase transition is also confirmed by DSC measurements. Electrical conductivity results are analysed and the activation energies of conduction at different temperature regions have been evaluated from the logσ vs 103T−1 plot. Possible mechanisms for the electrical conduction process are discussed, the available results being in favour of a proton transport model.
URI: http://dyuthi.cusat.ac.in/purl/2659
ISSN: 0022-3697
Appears in Collections:Dr.C P Girijavallabhan

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