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Original scientific paper

THE EFECT OF DIMENSIONALITY AND CURRENT STRENGHT ON CONDUCTIVITY OF GRANULAR METALS

By
Maja Đekić ,
Maja Đekić
Contact Maja Đekić

Faculty of Science, University of Sarajevo, Sarajevo, Bosnia and Herzegovina

Ajla Karić ,
Ajla Karić

Faculty of Science, University of Sarajevo, Sarajevo, Bosnia and Herzegovina

Amra Salčinović-Fetić ,
Amra Salčinović-Fetić

Faculty of Science, University of Sarajevo, Sarajevo, Bosnia and Herzegovina

Melisa Baždar ,
Melisa Baždar

Faculty of Science, University of Sarajevo, Sarajevo, Bosnia and Herzegovina

Belma Husković ,
Belma Husković

Faculty of Electrical Engineering, University of Sarajevo, Sarajevo, Bosnia and Herzegovina

Dijana Dujak ,
Dijana Dujak

Faculty of Electrical Engine, University of Sarajevo, Sarajevo, Bosnia and Herzegovina

Diana Ćubela
Diana Ćubela

Faculty of Engineering and Natural Sciences, University of Zenica, Zenica, Bosnia and Herzegovina

Abstract

Metallic materials in granular packings show different electrical properties from their bulk counterparts.
In this paper, we investigate the temporal evolution of the electrical conductivity of granular metals. We
use metallic beads arranged in different one-, two- and three-dimensional ensembles through which
different constant currents are injected. The conductivity behavior in all three types of systems is
qualitatively similar. The results show the rise of conductivity which is more pronounced in the earlier
stages of the time evolution. We investigate the influence of the dimensionality, number of the beads,
and the values of the injected currents on the conductivity behavior.

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