Measurements of surface magnetic fields in contact perpendicular recording using a high‐resolution magnetoresistive transducer

摘要

A high‐resolution vertical magnetoresistive transducer has been used to measure the magnetic field at the surface of rigid CoCr(Ta)/NiFe perpendicular recording media. Very sharp magnetic transitions achieved by contact recording were observed at the edges of the main pole of a single‐sided main‐pole‐driven perpendicular head, both along and across the recording track, with transition widths (10–90%) of 240 and 390 nm, respectively.