Orientation and angular dependence of magnetic properties for Ba-ferrite tapes

Author

Suzuki, Toshiyuki

Author_Institution

Toshiba Corp., Kawasaki, Japan

Volume

28

Issue

5

fYear

1992

fDate

9/1/1992 12:00:00 AM

Firstpage

2388

Lastpage

2390

Abstract

It is shown that Ba-ferrite tapes have a different angle dependence for H_c and squareness ratio than acicular particulate tapes. Large perpendicular-to-longitudinal ratios for H _c and squareness, and small switching field distribution (SFD) values are expected to contribute to the excellent high-density recording capability of Ba-ferrite tapes. It is clarified that Ba-ferrite tapes composed of about 3.5 aspect ratio particles have smaller SFDr values over a range of squareness ratios in the longitudinal direction from 0.5 to 0.85 than conventional acicular particulate tapes. This means that Ba-ferrite particles are a suitable material for use in high-density recording media

Keywords

barium compounds; coercive force; ferrite applications; magnetic hysteresis; magnetic properties of fine particles; magnetic tapes; BaFe₁₂O₁₉ ferrite tape; angular dependence; aspect ratio; coercive force; high-density recording capability; magnetic properties; magnetic tapes; orientation dependence; perpendicular-to-longitudinal ratios; small switching field distribution; squareness ratio; Coercive force; Disk recording; Ferrites; Frequency response; Magnetic properties; Magnetic recording; Magnetic switching; Particle measurements; Perpendicular magnetic recording; Saturation magnetization;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.179501

Filename

179501