A View on Longitudinal Magnetic Recording

Subjects for recording densities of 10Gbt/in2 - 30Gb/in2 are discussed, for longitudinal and perpendicular recording. Read-write specifications are estimated for their high recording densities. Reproducing outputs above 1mVpp/μm for magnetic heads are required. Correlation between magnetic media properties and recording densities are calculated for 10 - 30 Gb/in2 densities. Noise characteristics subjects and thermal instabilities are discussed for longitudinal recording media and perpendicular recording media.