提高磁带和磁盘表面的信息贮存密度是当今磁记录研究和发展的方向。增加记录密度,有利于提高影像的解像力和实现记录数据化。垂直记录是提高记录密度的途径之一。信息记录密度取决于磁带、磁盘单位面积的磁通反转或转换的量以及检测信噪比的大小等。目前大多数记录介质都是通过将磁性颗粒均匀分散在粘合剂中而制得,故磁粉 Improve the tape and disk surface information storage density is the direction of today’s magnetic recording research and development. Increase the recording density, help to improve the resolution of the image and to achieve record data. Vertical recording is one of the ways to increase the recording density. The density of information recording depends on the amount of magnetic flux reversal or conversion per unit area of ​​the magnetic tape, the size of the detected signal-to-noise ratio, and the like. At present, most of the recording media are made by uniformly dispersing the magnetic particles in the binder. Therefore, the magnetic powder