Study of the Structural, Magnetic and Transport properties of La3+ Doped Cu-Zn Ferrite

Abstract

Crystalline La doped Cu-Zn ferrite with compositions Cu_0.15Zn_0.85La_xFe_2-xO₄ [ x = 0.00, 0.02, 0.04, 0.06 and 0.08] were synthesized by using conventional solid state reaction method technique. X-ray diffraction pattern (XRD),

Crystalline La doped Cu-Zn ferrite with compositions Cu_0.15Zn_0.85La_xFe_2-xO₄ [x = 0.00, 0.02, 0.04, 0.06 and 0.08] were synthesized by using conventional solid state reaction method technique. X-ray diffraction pattern (XRD), scanning electron micrographs (SEM), hysteresis loop (M-H) curves and frequency dependent resistivity were employed to inspect the effect of La³⁺ doping on the structure, microstructure, magnetic and transport properties of the specimens. All the specimens exhibited fcc type cubic spinel structure where the particle size were within 500-1600 nm range. Magnetically ferromagnetic phenomenon was found for all the samples where the effect of La³⁺ doping consequence on the variation of various parameters like saturation magnetization (M_s), coercivity (H_c) and remanent magnetization (M_r). The resistivity tuned by frequency for all the samples presented the decreasing phenomenon with the increase of applied frequency.