A magnetic head for perpendicular recording without writing from the
lateral sides of a main pole and without erasing data on adjacent tracks.
A magnetic disk storage apparatus using the magnetic head. The lateral
side of the main pole of a magnetic head for perpendicular recording may
have an inverted tapered shape obtained by forming a groove as a track
portion to an inorganic insulating layer and then forming a magnetic layer
and then flattening the upper surface. A leading edge, a trailing edge, or
both lateral edges of the magnetic head may be tapered. The taper may be
either smooth and linear or curved in profile.
