FERRITE MATERIAL Russian patent published in 2007 - IPC H01F1/34 

FIELD: metallurgy; ferrite materials for microwave engineering.

SUBSTANCE: proposed Li-ferrospinel based ferrite material characterized in reduced saturation temperature coefficient TKJ_s, enhanced saturation stability J_s in operating temperature range of -60 to +85 °C at high J_s value and low dielectric and magnetic loss tangent in extremely-high frequency band has in its composition lithium, titanium, zinc, manganese, ferric, and lithium fluoride oxides, proportion of ingredients being as follows, mass percent: lithium oxide Li₂O, 2.753-3.39; titanium oxide TiO₂, 0.001-5,71; zinc oxide ZnO, 7.67-7.903; manganese oxide MnO₂, 4.12-6.21; ferric oxide, Fe₂O₃, 76.98-83.285; lithium fluoride LiF, 0.20-0.40.

EFFECT: enhanced yield of nonreciprocal microwave devices.

1 cl, 1 tbl, 5 ex