Bl. Tan et al., A NEW SERVO METHOD USING SERVO LAYER AND TRANSVERSE MR HEAD FOR SUBMICRON TRACK SERVO ON HARD COMPUTER DISKS, Journal of magnetism and magnetic materials, 155(1-3), 1996, pp. 345-347
A disk with a data, servo and isolation layer has been fabricated with
the data layer magnetized along the circumferential direction. The se
rvo layer was recorded with servo pattern magnetized along the radial
direction. A continuous servo signal is obtained and the servo does no
t occupy any data area. In this new method, the servo and data bits ca
n share media surface area on the disk without interference. Track fol
lowing on 0.7 mu m tracks has been demonstrated using the new servo me
thod on longitudinal rigid disks.