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Interpretation of orientation polarization in homoionic dry montmorillonite

Published online by Cambridge University Press:  09 July 2018

H. Belarbi ,
A. Haouzi ,
J. C. Giuntini ,
J. V. Zanchetta ,
J. Niezette  and
J. Vanderschueren
H. Belarbi
Affiliation:
Laboratoire de Physicochimie de la Matière Condensée - Equipe de Chimie Physique, (UMR 5617 CNRS), Université Montpellier 11, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
A. Haouzi
Affiliation:
Laboratoire de Physicochimie de la Matière Condensée - Equipe de Chimie Physique, (UMR 5617 CNRS), Université Montpellier 11, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
J. C. Giuntini
Affiliation:
Laboratoire de Physicochimie de la Matière Condensée - Equipe de Chimie Physique, (UMR 5617 CNRS), Université Montpellier 11, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
J. V. Zanchetta
Affiliation:
Laboratoire de Physicochimie de la Matière Condensée - Equipe de Chimie Physique, (UMR 5617 CNRS), Université Montpellier 11, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
J. Niezette
Affiliation:
Chimie Macromoléculaire et Chimie Physique, Université de Liège, Institut de Chimie au Sart-Tilman, B4000 Liege, Belgium
J. Vanderschueren
Affiliation:
Chimie Macromoléculaire et Chimie Physique, Université de Liège, Institut de Chimie au Sart-Tilman, B4000 Liege, Belgium
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Abstract

From measurements of dielectric losses as a function of frequency and temperature, as well as thermally stimulated depolarization currents, performed on a dry Na-montmorillonite, a qualitative description of the conduction mechanism has been proposed for this type of material. A representative approach related to the polarization phenomenon determined on this material led to the evaluation of the elementary energy Wj, connected with the reorientation of the dipoles during the hopping process. The results show the coherence between the polarization conductivity and the thermally stimulated currents methods.

Type
Research Article
Information
Clay Minerals , Volume 32 , Issue 1 , March 1997 , pp. 13 - 20
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1997

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