Writer pole remanence of a tapered main pole head

A micromagnetic model is used to study the head remanence of a perpendicular tapered main pole head and also discuss single pole heads and shielded heads. The reduction in the throat height is found to have less effect on the reduction in the head remanence in the tapered head than in the conventional head and the pole tip remanence is reduced to value closer to that of the conventional structure.