High bit density (100 Mb/cm/sup 2/) with single-layer Co-Cr media and ring heads in perpendicular magnetic recording

Surface properties and stray fields of rf-sputtered Co-Cr films

“…The calculations are made for two bit sizes, i.e. b = 100 nm which is nowadays almost achievable in a laboratory set-up [7], and b = 10 nm a future bit size. The contributions of the charges at the film substrate interface arc not included in our calculations (= no thickness loss).…”