Dielectric spectroscopy of polyaniline–Dy2O3 composites

Insitu polymerization of aniline was carried out in the presence of dysprosium oxide (Dy2O3) to synthesize Polyaniline (PANI)–Dy2O3 composites by the chemical oxidation method. The PANI/Dy2O3 composites were synthesized with various compositions viz., 10, 20, 30, 40 and 50 wt% of Dy2O3 in PANI. AC conductivity was studied in the frequency range 102–107 Hz. It is observed that AC conductivity achieved its maximum value for 40 wt% of Dy2O3 in PANI. The dielectric behavior is also investigated in the frequency range 102–107 Hz at room temperature. It is found that at 10 KHz frequency the 40 wt% composite shows maximum dielectric values. The dimensions of Dy2O3 particles in the matrix have a greater influence on the conductivity values and observed dielectric values.