The effect of remanence in digital recording

Author

Speliotis, D.

Author_Institution

University of Minnesota, Minneapolis, Minn.

Volume

Issue

fYear

1969

fDate

9/1/1969 12:00:00 AM

Firstpage

253

Lastpage

258

Abstract

A subject of great theoretical and experimental interest in digital recording in recent years has been the correlation between recording behavior and the magnetic properties of the recording media. Several isolated ranges of variation of media parameters have been explored with somewhat diverse results. The intent of this communication is to provide a comprehensive view over the entire range of the technologically interesting values of the media parameters, through a theoretical simulation of the recording process based on harmonic analysis. The remanent induction was the primary variable in this study, ranging from 500-18 000 gauss, while the coercivity and thickness were varied as parameters in the range 50-800 Oe and $5-1250 \\times 10^{-8}$ m, respectively. The results were fitted to a hyperplane of the form $PW_{50} = CH_{c}\\alpha _{1}B_{r}\\alpha _{2}t\\alpha _{3}$ . For small thickness ( $t \\leq 50 \\times 10^{-8}$ m) we found $\\alpha _{1} = -0.287 , \\alpha = 0.272, \\alpha _{3} = 0.290$ . For large thickness ( $t > 100 \\times 10^{-8}$ m) we found $\\alpha _{1} = -0.277, \\alpha _{2} = 0.260,\\alpha _{3} = 0.470$ with the change in α3attributed to an effective spacing loss.

Keywords

Digital magnetic recording; Remanence; Analytical models; Coercive force; Digital magnetic recording; Digital recording; Gaussian processes; Harmonic analysis; Magnetic properties; Magnetic recording; Remanence; Space vector pulse width modulation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1969.1066492

Filename

1066492

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1039974