Chemistry: electrical and wave energy – Processes and products – Coating – forming or etching by sputtering
Patent
1996-10-17
1997-11-11
Pianalto, Bernard
Chemistry: electrical and wave energy
Processes and products
Coating, forming or etching by sputtering
427129, 427130, 427131, 427132, 427264, 427270, 427271, 427367, C23C 1400
Patent
active
056859589
ABSTRACT:
A magnetic recording medium is constructed with a substrate made of glass, one or two underlayers, and a magnetic film. In order that the easy magnetization axis of the magnetic film is parallel to the magnetic film, an underlayer having an NaCl crystallographic structure is superposed on the substrate. A magnetic film made of a Co based alloy having a hexagonal close packed crystallographic structure is formed on this underlayer, putting an underlayer made of a material having a body centered cubic crystallographic structure therebetween at need. Magnetic anisotropy of the magnetic film is increased by forming grooves in a predetermined direction in a surface portion of the substrate. These grooves play a role also for defining the orientation of the underlayer made of the material having an NaCl crystallographic structure.
Futamoto Masaaki
Hirayama Yoshiyuki
Honda Yukio
Inaba Nobuyuki
Matsuda Yoshibumi
Hitachi , Ltd.
Pianalto Bernard
LandOfFree
Method of fabricating a magnetic recording medium does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of fabricating a magnetic recording medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of fabricating a magnetic recording medium will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1225835