Influence of Mg and Cr substitution on structural and magnetic properties of polycrystalline Ni0.50Zn0.50−x−yMgxCryFe2O4

摘要: Abstract Structural, surface morphological and magnetic properties of polycrystalline Ni 0.50 Zn 0.50− x − y Mg Cr Fe 2 O 4 (for  = 0.0, 0.1, 0.2 0.1) were thoroughly investigated. The lattice parameters the samples investigated are found to decrease with increasing contents. bulk density average grain diameter substitution in for any particular sintering temperature. However, they increase temperatures individual composition. In present investigation, maximum largest sintered at 1350 °C. observed variation densities explained help ionic radii atomic masses substituted cations. real part initial permeability, μ i ′ , saturation magnetization, M s contents whereas Neel temperature, T N increases. highest value which is 432, obtained (  = 0,  = 0) composition 1350 °C corresponding resonance frequency, f r 2 MHz. On other hand, (45 MHz) 0.1 1250 °C = 88 . relative quality factor, Q decreases values 0.3 1250 °C. sample related chemical composition, nature boundaries diameters. It also that accompanied by confirms Snoek relation ferrites.