High linear density in perpendicular recording

Two kinds of perpendicular oxide media are compared with a conventional, boron-alloy media. Using an integrated, 245 nm wide, single-pole, high-B-sat writer with trapezoidal write pole, a linear density of 760 kfci at a BER of 10(-5) was achieved at the ID radius of an oxide disk at 5400 RPM. MFM images of written tracks show higher-quality transitions up to a higher linear density on the oxide media. Furthermore, transitions on the B-alloy media exhibit a high degree of curvature. Finally, room temperature measurements of thermal decay on an improved oxide media, with only slightly degraded recording performance, showed the oxide media to be thermally stable. (C) 2003 American Institute of Physics.