Special Issue Description


Authors : D. Badwaik, V. Badwaik, F. Nirwan, D. Nanadnwar

Page Nos : 37-43

Description :
Abstract: Y-type nano hexaferrites with generic formula Sr2Ni1-XZnCoXFe12O22 (x = 0, 0.1, 0.2, 0.3, 0.5) were synthesized by novel microwave assisted sol gel method. Structural characterizations of the prepared samples have been performed using X-ray powder diffraction pattern. The prepared samples are in single Y –type hexagonal phase with the space group . The lattice parameters, X-ray density, experimental density, and porosities of samples were measured from XRD data. It is observed that the lattice parameters “a” and “c” decreases with content of cobalt. The crystallite size is in the range 38- 72nm, shows nanosize of prepared samples. The ac electrical conductivity, dielectric constant and dielectric loss are measured in the range 100Hz to 0.2MHz. It was found that, the ac conductivity shows dispersion at high frequencies. This dispersion was explained on the basis of interfacial polarization that formed due to the inhomogeneous structure of ferrite material. Keywords: Y-type nano hexaferrites, XRD, AC electrical conductivity, Dielectric constant,

Date of Online: 30 Special Issue-2, Feb. 2015