MAGNETIC SOFT FILLER AND COMPOSITE POLYMER MAGNETIC MATERIAL BASED ON IT Russian patent published in 2008 - IPC H01F1/37 H01F1/42 B22F1/02 B82B3/00 

FIELD: physics, radio.

SUBSTANCE: invention concerns magnetic materials, particularly magnetic soft fillers and composite polymer magnetic materials with high magnetic conductivity in UHF range, based on the claimed fillers, and can be applied in electronic industry. The filler contains 10-300 mcm particles of ferromagnetic ferrite with low field of magnetic crystalline anisotropy, and 10-300 nm thick coating of structurised electroconductive polymer, covering particles. Ferrite can be represented by spinel ferrites of Mn and Ni containing polyvalent iron cations Fe⁺² and Fe⁺³, or magnetite, or hexaferrites containing polyvalent iron cations, or yttrium ferrogarnet alloyed by metals from a group of Si, Ge, Ti, Gd, Al, Cd, Sm, In, Co. Electroconductive polymer is a polymer selected out of a group of polyaniline, polypyrrol, polytoluidine, polyanizidine. Composite polymer magnetic material includes the claimed filler and is obtained by molding method. According to the second embodiment, the material additionally includes dielectric polymer at the following component ratio, wt %: filler 75-90, dielectric polymer 10-25.

EFFECT: possible adjustment of effective magnetic conductivity and increased conductivity in UHF range.

6 cl, 21 ex