Title :
Effect of Cu-Doped Nickel Ferrites on Structural, Magnetic, and Dielectric Properties
Author :
Anjum, Shaharyar ; Rashid, Ahmar ; Bashir, Faisal ; Riaz, S. ; Pervaiz, M. ; Zia, Rehana
Author_Institution :
Dept. of Phys., Lahore Coll. for Women Univ., Lahore, Pakistan
Abstract :
NiCu ferrites with the general formula Ni1-xCuxFe2O4, where x = 0, 0.2, 0.4, 0.6, 0.8, have been synthesized by double-sintering method. The single-phase spinel structure is confirmed by X-ray diffractometer. This analysis showed the increasing behavior of lattice parameter due to the larger ionic radii of the Cu ion. Fourier transform infrared spectra confirmed the two prominent bands of spinel ferrites in the range 1000-400 cm-1. Magnetic properties are studied using vibrating sample magnetometer. It is investigated that the saturation magnetization decreases linearly as the copper concentration increases. The surface morphology is carried out using scanning electron microscopy. The dielectric properties have been investigated as a function of frequency. The dielectric constant is decreased and ac conductivity is increased at higher frequency.
Keywords :
X-ray diffraction; copper; electrical conductivity; ferrites; lattice constants; magnetisation; nickel compounds; permittivity; scanning electron microscopy; sintering; surface morphology; Fourier transform infrared spectra; Ni1-xCuxFe2O4; X-ray diffractometer; ac conductivity; dielectric constant; double sintering method; ionic radii; lattice parameter; nickel ferrites; saturation magnetization; scanning electron microscopy; single phase spinel structure; surface morphology; vibrating sample magnetometer; wave number 400 cm-1 to 1000 cm-1; Conductivity; Copper; Dielectrics; Ferrites; Ions; Magnetic properties; Nickel; Dielectric properties; magnetic properties; spinel ferrites; surface morphology;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2014.2318312
