Perpendicular magnetic recording performance of double-layer media

1 November 1981

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Magnetics

Vol. 17 (6) , 2538-2540
https://doi.org/10.1109/tmag.1981.1061679

Abstract

Perpendicular magnetic recording performance for double-layer (Co-Cr,Ni-Fe) media was analyzed, with a simple magnetization model, in comparison with single-layer media. The calculated output voltage from a ring-shaped reproducing head shows good agreement with experimental data. It is shown theoretically and empirically that the Co-Cr layer thickness can be reduced without sacrificing the output amplitude, if the Ni-Fe layer is placed underneath it to perform as a "flux sink" to extinguish the rear surface charge on the Co-Cr layer.

Keywords

This publication has 3 references indexed in Scilit:

Perpendicular magnetic recording with a composite anisotropy film
IEEE Transactions on Magnetics, 1979
An analysis for the magnetization mode for high density magnetic recording
IEEE Transactions on Magnetics, 1977
The Reproduction of Magnetically Recorded Signals
Bell System Technical Journal, 1951