Abstract
Nickel doped barium cobalt hexaferrite samples were prepared using simple heat treatment method. The precursor was calcinated at 650°C for 3 hours and cooled at room temperature in order to obtain barium cobalt hexaferrite. The prepared hexaferrites were characterized by various experimental techniques like Fourier Transform Infrared Spectroscopy (FTIR) and Dielectric measurements. The FTIR spectra was recorded at room temperature using KBr pallet method. The FTIR result confirms the formation of ferrite phase. The dielectric measurements were carried out at room temperature between the frequency ranges of 100 Hz to 2 MHz. The dispersion of real dielectric constant is more at lower frequencies compared to that at higher frequencies, which can very well be explained on the basis of Maxwell Wagner model. The dielectric loss peak is observed at higher frequencies with increase in the cobalt content.
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