Magnetization model for R/W simulation of acicular particulate media

Author

Tsutsumi, H. ; Kugiya, F. ; Akagi, F. ; Matsuyama, I.

Author_Institution

Hitachi Ltd., Yokohama, Japan

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

2113

Lastpage

2115

Abstract

A vector magnetization model is introduced in which curling and rotation-in-unison modes for a prolate spheroid are used. It is confirmed that this model is able to determine the magnetic properties of two types of γ-Fe₂O₃ particulate media very well. Based on this model, read/write (R/W) simulation was conducted to clarify the influence of particle orientation and switching field distribution on the R/W characteristics of the media. The results indicate that an improvement in particle orientation is effective in increasing low-density output voltage, while narrowing the switching field distribution is effective in improving high-density R/W performance

Keywords

iron compounds; magnetic properties of fine particles; magnetic recording; magnetisation; Fe₂O₃; R/W simulation; acicular particulate media; curling; gamma phase; low-density output voltage; magnetic properties; magnetization model; particle orientation; prolate spheroid; read/write simulation; rotation-in-unison modes; switching field distribution; Atmospheric modeling; Educational institutions; Extraterrestrial measurements; Laboratories; Magnetic heads; Magnetic materials; Magnetic properties; Magnetic recording; Magnetization; Samarium;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104637

Filename

104637