FERROMAGNETIC GLASS Russian patent published in 2002 - IPC

FIELD: oxide glass-like materials possessing ferromagnetic properties for electronics, magneto-optics and laser engineering. SUBSTANCE: ferromagnetic glass contains Fe₂O₃, NiO and ZnO in form of nickel-zinc ferrite (Ni, Zn)Fe₂O₄, which is just ferrite process waste at the following ratio of components, mas.%: SiO₂, 35.3-45.2; Na₂O, 5.3-7.2; B₂O₃, 10.8-26.7; Fe₂O₃,, NiO and ZnO in form of (Ni, Zn)Fe₂O₄, 35.7-40.8. EFFECT: improved magnetic characteristics of glass: residual magnetization, coercive force and saturation magnetization. 2 tbl