Title :
Transverse correlation length in thin film media
Author :
Mian, Guo ; Indeck, R.S. ; Muller, M.W.
Author_Institution :
Dept. of Electr. Eng., Washington Univ., St. Louis, MO, USA
fDate :
9/1/1992 12:00:00 AM
Abstract :
A method to estimate a transverse correlation length λ in magnetic thin-film media has been developed. Using a pseudomicrotrack (or filamentary track) analysis, expressions for estimating λ of the media have been derived. λ can be determined from the slope of the correlation coefficient of read back signals read at different lateral positions. It was observed that λ does not strongly depend on the remanent magnetic state for a single-layer medium with strong intergranular coupling but decreases significantly near demagnetization for a multilayer medium
Keywords :
hard discs; magnetic recording; magnetic thin films; correlation coefficient; filamentary track; magnetic thin-film media; multilayer medium; pseudomicrotrack; read back signals; single-layer medium; strong intergranular coupling; thin film media; transverse correlation length; Digital filters; Displacement measurement; Equations; Filtering; Magnetic heads; Magnetic noise; Magnetic separation; Remanence; Transistors; Voltage;
Journal_Title :
Magnetics, IEEE Transactions on
