Abstract
Insitu polymerization of aniline was carried out in the presence of dysprosium oxide (Dy 2 O 3 ) to synthesize Polyaniline (PANI)–Dy 2 O 3 composites by the chemical oxidation method. The PANI/Dy 2 O 3 composites were synthesized with various compositions viz., 10, 20, 30, 40 and 50 wt% of Dy 2 O 3 in PANI. AC conductivity was studied in the frequency range 10 2 –10 7 Hz. It is observed that AC conductivity achieved its maximum value for 40 wt% of Dy 2 O 3 in PANI. The dielectric behavior is also investigated in the frequency range 10 2 –10 7 Hz at room temperature. It is found that at 10 KHz frequency the 40 wt% composite shows maximum dielectric values. The dimensions of Dy 2 O 3 particles in the matrix have a greater influence on the conductivity values and observed dielectric values.
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