PURPOSE: To attain the overwrite property by more lowering coercive force of an underside magnetic layer than of an upperside magnetic layer when direction of a surface faced to a magnetic head from a substrate is regarded as upperside.
CONSTITUTION: A magnetic layer 5, a Cr layer 6, a magnetic layer 7, a Cr layer 8 and a magnetic layer 9 are laminated with an under layer 4 on a substrate 3 in this order. In this case, each thickness of the magnetic layer 5, 7, 9 increases in proportion as the magnetic layer nears to the side of the under layer 4 from the surface side to weaken coercive force. In this way, as coercive force of the underside magnetic layer is made lower than of the upperside magnetic layer, a pattern is easily written on the underside magnetic layer and the overwrite property is improved.
MORITA HIROAKI
OKUMURA ZENZO
TAKEMURA YOSHIKI
KUBOTA KK