ferromagnetiliste omadustega oksiidne tehnokeraamika; magnetkeraamiliste materjalidena on tuntud ferriidid (M(FexOy), kus M - mitteraudmetall) ja spinellid (M(Fe2O4), kus M- tavaliselt Mn, Ni, Co, Zn, Cu, Mg) (vt tehnokeraamika), oxide materials that exhibit a certain type of permanent magnetization called ferromagnetism; they are made of ferrites (M(FexOy), where M - other metallic elements that iron) and spinels (M(Fe2O3), where M - Mn, Ni, Co, Zn, Cu, Mg) (see: engineering ceramics)