This type of magnetic material has very wide applications.
Tips
usage
磁 appears in many compounds: 磁铁 (cítiě, magnet), 磁场 (cíchǎng, magnetic field), 磁卡 (cíkǎ, magnetic card), 磁盘 (cípán, disk). As a variant of 瓷, it can mean porcelain, but this usage is rare in modern Chinese.