what is the main difference between longitudinal and perpendicular magnetic recording
The difference between longitudinal and perpendicular recording is the orientation of the anisotropy of media grains. Fig. 1.2 shows schematically the difference between both recording solutions. In the case of longitudinal recording the grains magnetization is lying in the plane of the magnetic medium.When the medium is magnetized by the recording head, the average magnetization is pointing in the down-track direction (see Fig 1.2).agnetic recording is one of the most important examples of working nanotechnology. Here we will mostly be concerned with the hard disk magnetic storage. The magnetic information in the hard disk is stored in ``bits'' which are patterns of magnetization in a magnetizable material to store data.