Title :
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
fDate :
9/1/1989 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
