钡铁氧体作为永磁材料已有几十年的历史,获得了广泛的应用。但作为磁记录材料,却是最近几年的事。7.0年代后期,出现了一种新的高密度记录技术一垂直磁记录技术。钡铁氧体介质作为涂布型垂直记录介质的代表,受到了人们的重视。1982年,O.Kubo Barium ferrite as a permanent magnet material has been for decades, has been widely used. However, as a magnetic recording material, it has been a matter of recent years. In the late 1970s, a new high-density recording technology-perpendicular magnetic recording technology emerged. Barium ferrite media as a representative of coated vertical recording media, has received people’s attention. In 1982, O.Kubo