Author(s):
1. Biljana Pećanin, Univerzitet u Banjoj Luci, Tehnološki fakultet, Republic of Srpska, Bosnia and Herzegovina
2. Slavica Maletić, Univerzitet u Beogradu, Fizički fakultet, Studentski trg 12, Beograd, Serbia
3. Ivan Petronijević, Univerzitet u Beogradu, Fizički fakultet, Studentski trg 12, Beograd, Serbia
4. Dragana Grujić, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
5. Branka Ružičić, University of Banja Luka, Faculty of Technology, Republic of Srpska, Bosnia and Herzegovina
6. Dragana Cerović, University of Belgrade, Faculty of Physics, Serbia
7. Blanka Škipina, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina

Abstract:
The parallel plate method serves as one of the basic approaches in dielectric spectroscopy measurements. This method is based on placing a thin layer of dielectric sample between two electrodes, forming a capacitor-like structure. A key requirement for accurate measurements in this case is to ensure good contact between the electrodes and the sample over the entire surface. To ensure this, one of the most widely applied solutions is the use of conductive paste, which improves both the contact and the repeatability of the measurements. In this study, measurements were carried out on bentonite samples, a material known for its great swelling capacity and high sensitivity to moisture. To overcome the limitations associated with conductive paste due to these properties of bentonites, graphite layers were applied to the samples. The influence of the graphite coating, aimed at improving the electrode-sample contact, on the measurement results was systematically investigated. For the purposes of this study, admittance (Y) was selected as the quantity to be analyzed, with a focus on measuring the frequency-dependent behavior of conductance (G) and susceptance (B).

Key words:
dielectric spectroscopy,parallel plate method,graphite,bentonite

Thematic field:
SYMPOSIUM A - Science of matter, condensed matter and physics of solid states

Date of abstract submission:
11.06.2025.

Conference:
Contemporary Materials 2025 - Savremeni Materijali

Applied paper from author