Modeling and analysis of overwrite in thick particulate media

Author

Wei, Dan ; Bertram, H. Neal ; Friedmann, A. ; Dee, Richard H.

Author_Institution

Center for Magnetic Recording Res., California Univ., San Diego, La Jolla, CA, USA

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

2898

Lastpage

2900

Abstract

Overwrite in tape recording is studied by three dimensional micromagnetic simulation. We simulate thick tape media of randomly distributed ellipsoidal particles with proper orientation distributions. Our initial calculations examine the overwriting of a low frequency NRZI signal by a higher frequency signal. The simulation allows us to look at the signal spectrum at each depth into the medium before and after overwrite. We find that the residual low frequency signal is due to contributions from all depths in the media. The effect of record equalization on overwrite ratios is also studied

Keywords

magnetic particles; magnetic tapes; NRZI signal spectrum; ellipsoidal particles; orientation distribution; overwrite; particulate media; record equalization; tape recording; three dimensional micromagnetic simulation; Anisotropic magnetoresistance; Atmospheric modeling; Crystallization; Equations; Frequency; Magnetic anisotropy; Magnetic heads; Pattern analysis; Perpendicular magnetic anisotropy; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.490183

Filename

490183