Title :
Read/write characteristics for laminated high moment Fe-Ta-N film heads for HDTV VTR
Author :
Okumura, Toshiyuki ; Osaka, Akihiro ; Ishiwata, Nobuyuki ; Kitamura, Mikio ; Urai, Haruo
Author_Institution :
NEC Corp., Kanagawa, Japan
fDate :
9/1/1992 12:00:00 AM
Abstract :
Laminated Fe-Ta-N film video heads have been developed using high-wear-resistance ceramic. The heads achieve a recording capability more than 1.5 dB superior to Sendust heads and more than -35 dB overwrite values for 1-μm wavelength signals over 2-μm wavelength signals with high coercive (>1500 Oe) metal particle tapes. Sufficient wear resistance is also shown with 21.4 m/s tape head relative velocity for high-definition television (HDTV) video tape recorders (VTRs). It should be possible to improve the read/write characteristics for the Fe-Ta-N head by magnetoelastic energy control to a negative value
Keywords :
abrasion; high definition television; iron alloys; laminates; magnetic heads; magnetic thin film devices; tantalum alloys; video tape recorders; HDTV VTR; high-wear-resistance ceramic; laminated FeTaN film video heads; magnetoelastic energy control; overwrite values; read/write characteristics; recording capability; wear resistance; Ceramics; Frequency; HDTV; Magnetic cores; Magnetic heads; Magnetic recording; Magnetic separation; National electric code; Saturation magnetization; Video recording;
Journal_Title :
Magnetics, IEEE Transactions on
