Barium ferrite tape for DAT magnetic contact duplication

Author

Suzuki, T. ; Ito, T. ; Isshiki, M. ; Saito, N.

Author_Institution

Toshiba Recording Media Div., Kawasaki, Japan

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

4060

Lastpage

4062

Abstract

The coercivity and perpendicular orientation effects on duplication performance for the Ba-ferrite slave tape are studied by means of a DAT (digital audio tape) performance measurement on DAT recorders and anhysteretic magnetization process measurement for the slave tapes. Environmental stability for the duplicated Ba-ferrite tapes is also described. It is shown that perpendicularly oriented Ba-ferrite slave tapes, with relatively low coercivity values of around 600-700 Oe, enable a high-speed magnetic contact duplication of 76 kFRPI DAT signals to be practical. A sufficiently low error rate and high environmental stability are demonstrated for the Ba-ferrite tapes. The magnetization mechanism involved in the duplication process is analyzed in terms of anhysteretic remanent magnetization

Keywords

barium compounds; coercive force; digital audio tape; environmental testing; ferrite applications; magnetic tapes; remanence; BaFe₁₂O₁₉; DAT magnetic contact duplication; DAT recorders; anhysteretic magnetization process; anhysteretic remanent magnetization; coercivity; digital audio tape; environmental stability; error rate; ferrite tape; perpendicular orientation; slave tape; Audio tapes; Barium; Coercive force; Error analysis; Ferrites; Magnetic analysis; Magnetization processes; Measurement; Perpendicular magnetic recording; Stability;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42522

Filename

42522