Ferrite magnet.permance ferrite magnet; Ferrite magnet is made up of SrO,or BaO and Fe2O3,Produced by the ceramic process . Ferrite magnet.permance ferrite magnet,magnet.Ferrite magnet is made up of SrO,or BaO and Fe2O3,Produced by the ceramic process.a):Size Φ7.5-Φ300mm,thickness reach 40mm.b):Lots of moulds.c):The magnet is wildly used in loudspeakers.d):Particle size(after ball mill)for Y25 ...