Some aspects of overwrite in thick magnetic media

Author

Stek, A. ; Stupp, S.E. ; Luitjens, S.B.

Author_Institution

Philips Res. Lab., Eindhoven, Netherlands

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

4055

Lastpage

4057

Abstract

Quantitative comparisons of experiments and the predictions of various models of overwrite phenomena are presented; For the range of wavelengths (λ) and write current amplitudes (I) used in this work we find that the residual signals present after overwrite can be described within the context of a single physical process which is described in the rewriting model. The rewriting model is found to give rise to both the overwrite induced bit-shift, and the depth-of-recording phenomena which we observe. The experimental results indicate that variations in the head properties (efficiency and head field gradient) do not contribute significantly to the residual signals following overwrite, for the head and frequency range we used. Finally, we present the first spatial-domain measurements of spatial phase sensitive overwrite induced bit-shift in thick media

Keywords

magnetic heads; magnetic tape storage; tracking; depth-of-recording phenomena; head efficiency; head field gradient; induced bit-shift; magnetic tape storage; overwrite phenomena; physical process; residual signals; spatial phase sensitivity; spatial-domain measurements; thick magnetic media; write current amplitudes; Bit error rate; Demagnetization; Frequency; Laboratories; Magnetic field measurement; Magnetic heads; Magnetization; Predictive models; Signal processing; Thickness measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.539261

Filename

539261