FERRITE MATERIAL Russian patent published in 2022 - IPC H01F1/34 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering, namely, to microwave technology, in particular, to ferrite materials with a garnet crystal structure intended for use in non-reciprocal microwave devices: fans, circulators, switches, high-power phase shifters operating in the centimeter wavelength range. The invention is aimed at reducing the tangent of the dielectric loss angle (tgδ_ε) less than 1×10^-4, ensuring: the tangent of the magnetic loss angle (tgδ_μ) less than 1.1×10^-3, while maintaining the values of: the width of the spin wave line (ΔH_k) at least 0.8 kA/m at a frequency of 9.5 GHz, saturation magnetization (M_s) 143.2 kA/m±5%, the actual component of the relative dielectric permittivity of 15.0±5. The expected result is achieved due to the fact that a ferrite material with a garnet structure based on yttrium, samarium and iron oxides contains, wt. %: yttrium oxide (Y₂O₃) 45.27÷45.49, samarium oxide (Sm₂O₃) 0.63÷0.65, iron oxide (Fe₂O₃) the rest.

EFFECT: ensuring low direct microwave losses.

1 cl, 1 tbl