Title :
Structural and Frequency Dependence Dielectric Properties of Magnesium Doped Nickel Ferrite
Author :
Lohar, K.S. ; Patange, S.M. ; Shirsath, S.E. ; Jadhav, S.S.
Author_Institution :
Dept. of Chem., Shrikrishna MahavidyalayaDepartment of Chemistry, Gunjoti, India
Abstract :
The structural and dielectric properties of magnesium substituted nickel ferrite having the general formula of Ni1-xMgxFe2O4 (x = 0, 0.2, 0.4, 0.6, 0.8, 1.0) has been studied as function of Mg ion concentration. The samples were prepared by sol-gel auto-combustion method The powder X-ray diffraction patterns confirm single phase cubic structure. The variation of lattice constant ´a´ increases with Mg content x, the average particle size of these ferrites as determined from Scherrer´s relation and TEM is in the range of few ten nanometer. The dielectric constant decreases with increase in frequency and Mg content x. The dispersion of dielectric constant was discussed in the light of Koop´s theory.
Keywords :
X-ray diffraction; combustion; doping profiles; ferrites; lattice constants; magnesium compounds; nickel compounds; particle size; permittivity; sol-gel processing; transmission electron microscopy; Koop theory; Ni1-xMgxFe2O4; TEM; dielectric constant; frequency dependence dielectric properties; lattice constant; magnesium doped nickel ferrite; magnesium ion concentration; particle size; phase cubic structure; powder X-ray diffraction; sol-gel auto-combustion method; structural properties; Dielectric constant; Ferrites; Nickel; Temperature; X-ray diffraction; X-ray scattering;
Conference_Titel :
Nanoscience, Technology and Societal Implications (NSTSI), 2011 International Conference on
Conference_Location :
Bhubaneswar
Print_ISBN :
978-1-4577-2035-2
DOI :
10.1109/NSTSI.2011.6111774
