Manganese-based spinel ferrites for microwave absorption

摘要

The structural, magnetic, and electrical properties were analyzed to see the impact of yttrium ions upon manganese spinel ferrite. The samples of MnY_yFe_(2-y)O_4 (y = 0-0.1) were created by wet chemical sol-gel method. The development of cubic spinel configuration was observed in all models with the use of X-ray diffraction analysis. The values of different magnetic parameters like saturation magnetization and remanence declined with the increase of yttrium concentration, while coercivity was enhanced. The real and imaginary parts of permittivity decreased with the increase in Y concentration. The impedance enhanced with the substitution of Y~(3+) ions. The M-H loops of all the samples were experimentally measured from - 2 K Oe to + 2 KOe. All these parameters suggested that manganese-based ferrites may be used in microwave absorption.