Microstructure and Electromagnetic Properties of Y3+ Substituted Mg-Mn Nanocrystalline Ferrites Via Hydrothermal Procedure

Mg 0 . 2 ${}_{0.2}$ Mn 0 . 8 ${}_{0.8}$ Y x Fe 2 − x ${}_{2-x}$ O 4 ( x = 0 . 0 0 0 $x=0.000$ , 0.025, 0.050 and 0.075) nanocrystalline is synthesized via hydrothermal technique. Single cubic spinel phase is confirmed by XRD and the formation of Mg 0 . 2 ${}_{0.2}$ Mn 0 . 8 ${}_{0.8}$ Y x Fe 2 − x ${}_{2-x}$ O 4 is verified by EDS. The average size of the nanoferrites is around 80 nm, which is examined by TEM image. Y 3 + ${}^{3+}$ substituted Mg-Mn nanoferrites exhibit low saturation magnetization ( M s ) $M_s)$ and coercivity ( H c ) $H_c)$ . Especially, the nanoferrites with x = 0 . 0 7 5 $x=0.075$ show the lowest M s $M_s$ and H c $H_c$ of 46.96 $$ emu/g and 12.04 $$ Oe, respectively. The ferrite composites present that the resistivity and the magnetic loss are less than 4 . 5 × 1 0 7 Ω ⋅ cm $4.5\times 10^7\mathrm{\Omega }\cdot \mathrm{\text{cm}}$ and 0.7 in the range of 2–18 $$ GHz, respectively. The low coercivity and high resistivity indicate that the addition of Y 3 + ${}^{3+}$ contributes to the synthesis of the excellent soft magnetic materials.