Authors : S. P. Waghmare, A. S. Kakde, A. C. Sisyawar, D. M. Borikar, and K. G. Rewatkar
Page Nos : 148-154
Description :
ABSTRACT:
An attempt has been made to synthesize aluminium substituted nickel nanoferrite by microwave assisted sol-gel auto combustion method with generic chemical formula Ni1-x AlxFe2-yO4 (x=0, y=0 & x=0, y=0.5). The synthesized samples were characterized by XRD . The X-ray diffraction analysis confirms the single phase formation with cubic structure. The XRD studies revealed that the lattice parameter (a), the particle size (D), X-ray density (ρx) decreases with Al substitution. Electrical characterisation as conductivity is measured by four probe precision impedance analyser (6500 B). Electrical conduction in ferrite can be explained by Verway hoping mechanism of electron. The dielectric properties of the ferrite samples have been measured with different temperature at constant frequency of 100 Hz. The result confined the variation of dielectric constant increases with increase in temperature along with calculation explained with Maxwell interface polarization in accordance with Koop’s phenomenological model.
Keywords: sol-gel method, XRD, electrical conductivity, dielectric constant, etc.
