Vector Angle of Remanent Magnetization

-A simple method for estimating the remanent magnetization vector angle (e) is introduced. By using this method, the orientation effects of Ba-ferrite FDs on the effective vector angle for the remanent magnetization and on recording characteristics were investigated. The resul ts show that the angle e depends on perpendicular squareness ratio (S~) and is independent from Hc. Also, the larger the S~ becomes, the higher the D50 becomes. The results also show that the higher the recording density becomes, the more perpendicularly the remanent magnetization vector becomes for the Ba-ferrite FD with a relatively low squareness ratio.