The angular distribution of the magnetization in magnetic recording tapes

The angular distribution of the magnetization in a recording tape in, for example, the remanent state is obtained by fitting realistic models of the distribution to experimental data. The results on a wide range of tapes show that the distribution (assumed to take a double Gaussian form) tends to be cylindrically symmetrical about the tape axis. Values of the angular standard deviation usually lie between 0.4 and 0.8 radians.