Title :
Dynamics of nonlinearities in high density recording
Author :
Che, Xiaodong ; Bertram, H.N.
Author_Institution :
Center for Magnetic Recording Res., California Univ., San Diego, La Jolla, CA, USA
fDate :
1/1/1993 12:00:00 AM
Abstract :
A micromagnetic model is used to study nonlinearities in high-density recording. Head imaging is taken into account approximately to model near contact recording. The simulations are able to show detailed steps of a dibit transition formation and illustrate the effect of the image field. Nonlinear amplitude reduction as a result of zigzag transition percolation is calculated at different recording densities and flying heights. The numerical results agree very well with experiment. Effects of medium exchange coupling and medium orientation on the amplitude loss are also investigated
Keywords :
hard discs; magnetic recording; percolation; amplitude loss; dibit transition formation; dynamics of nonlinearities; head imaging; high density recording; image field; medium exchange coupling; medium orientation; micromagnetic model; near contact recording; zigzag transition percolation; Crystallization; Magnetic films; Magnetic heads; Magnetic noise; Magnetic recording; Magnetic separation; Magnetization; Magnetostatic waves; Micromagnetics; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
