Method for preparing magneto-dielectric ferrite materials for vuhf application

Abstract

The present disclosure relates to a method for preparing a ferrite material, including the following steps: S1: grinding the ferrite particles P1 with grinding balls B1, to obtain the ferrite particles P2, the diameter d90 of the ferrite particles P2 being smaller than the diameter d90 of the particles P1, S1 being carried out at an energy E1 greater than 1.5 kWh/kg; and S2: grinding the ferrite particles P2 with grinding balls B2 to obtain the ferrite particles P3, the diameter d90 of the ferrite particles P3 being smaller than the diameter d90 of the particles P2, S2 being carried out at an energy E2 greater than 5 kWh/kg, and the diameter of the balls B1 being greater than the diameter of the balls B2. The disclosure also relates to a magneto-dielectric ferrite material obtained by such a method, intended for use in the VUHF frequency band.

Dependencies are inferred from the claim text.