Photo from wikipedia
Abstract La-Sm substituted Sr-hexaferrite {SrAl4(La0.5Sm0.5)xFe8-xO19 with x = 0.0, 0.5, 1.0, 1.5} nanomaterials have been synthesized by the auto combustion method. The XRD is supported the magneto-plumbite phase. Rietveld structure refinement… Click to show full abstract
Abstract La-Sm substituted Sr-hexaferrite {SrAl4(La0.5Sm0.5)xFe8-xO19 with x = 0.0, 0.5, 1.0, 1.5} nanomaterials have been synthesized by the auto combustion method. The XRD is supported the magneto-plumbite phase. Rietveld structure refinement is carried out to estimate crystallite size, strain, and variation in lattice parameters with composition. Prepared ferrite grains have a platelet-like shape, and the grain size increases with substitution. Remanence (Br) magnetization is observed to increase while intrinsic (iHc) coercivity to decrease with substitution. The dielectric permittivity (ɛ) is found to decrease with the increase in frequency. AC resistivity (ρ) is decreased with the enhancement of La-Sm substitution. The optimized magnetic properties obtained from x = 1.0 composition are Br = 5.19 kG, iHc = 6.18 kOe, (BH)max = 6.69 MGOe, Tc = 492 K, and ρ = 4.30*107 Ohm-cm (at 100 kHz). Under 1 kW output power, the ferrite is useful for DC motors application.
Journal Title: Journal of Molecular Structure
Year Published: 2019
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!