Investigations on structural, electrical and magnetic properties of nickel substituted La-ferrites

摘要

Nanocrystalline nickel substituted La-ferrites, LaNi_xFe_(1-x)O_3 (where x = 0, 0.2, 0.4, 0.6 and 1.0) were synthesized by sol—gel autocombustion method. X-ray diffraction (XRD) technique was used to confirm the phase formation. The lattice parameter (a) decreases with increase of Ni content. The surface morphology and elemental analysis of the samples were studied by using scanning electron microscopy (SEM) and energy dispersive X-ray spectrometer (EDS). The electrical properties of the samples were measured by two-probe method. The hysteresis parameters viz. saturation magnetization (M_s), coercivity (H_C) and remanence (M_r) are reported as a function of nickel content. The substitution of nickel plays an important role in changing the structural, electrical and magnetic properties of La-ferrites.