Ferrite shine ƙarfe oxide na ƙarfe. Dangane da kaddarorin lantarki, tsayayyar ferrite ya fi girma fiye da na ƙarfe na ƙarfe ko kayan maganadisu na alloy, kuma yana da mafi girman kaddarorin dielectric. Kaddarorin maganadisu na ferrite kuma suna nuna cewa suna da babban juzu'i a mitoci masu yawa. Saboda haka, ferrite ya zama abin da ba na ƙarfe ba na magnetic abu wanda aka yi amfani da shi sosai a fagen matsanancin rauni na halin yanzu. Saboda ƙarancin ƙarfin maganadisu da aka adana a cikin juzu'in juzu'in ferrite, jikewar magnetic induction (Bs) shima ƙasa ce (yawanci kawai 1/3 ~ 1/5 na ƙarfe mai tsafta), wanda ke iyakance amfani da shi a cikin ƙananan mitoci masu buƙatar ƙarfin maganadisu mafi girma. yawa.