Abstract
The recording performance of Co-Cr-Nb perpendicular media was evaluated using a merged MR head and a small gap length MIG head. Decrease in output at large current for single layer medium was reduced and over write property was improved by using a small gap length MIG head. Larger flying height suppressed the output decrease at the expense of the peak output voltage. This may be related to broadening of perpendicular head field. It was suggested that high-density recording for perpendicular medium is possible using a ring head with a small gap length and a low flying height. A high areal recording density of 17 Gbit/in^2 would be expected from the recording performance and the MFM image for combination of a ring head and the single layer perpendicular medium.
