The synthesis and study of the electrical properties of composites (FeAl₂O₃) with paraffin wax and the determination of the mechanism of electrical conductivity

Thick films of composites of iron–aluminium oxide (FeAl₂O₃) were prepared by mixing paraffin wax with a powder of aluminium oxide (Al₂O₃) and iron granular (Fe) (600 μm in size). The current–voltage (I-V) characteristic was measured at different temperatures (293– 328 K). The electrical conductivity was also measured at those temperature levels. It was noted that an increase in temperature leads to an increase in electrical conductivity. The activation energies (Ea) were determined to be 0.357–0.125 ev; the electrical conductivity mechanism was identified as the Schottky and Poole–Frenkel effects.