Title :
Possibility of 3 Gbits/in2 floppy disk
Author :
Nagao, M. ; Usuki, K. ; Nishikawa, M. ; Kashiwagi, A.
Author_Institution :
Recording Media Products Div., Fuji Photo Film Co. Ltd., Odawara, Japan
fDate :
9/1/2000 12:00:00 AM
Abstract :
We tried to realize Gbits/in2 class Floppy Disk with a magnetic layer prepared by sputtering (SP-FD). The heat-durable undercoat and the underlayers made magnetic layer have Gbits/in2 properties, with higher S/N and narrower PW50 In comparison with those of 3.1 Gbits/in2 HD. Heat durable substrate, fine protrusions and aerodynamics consideration allowed to achieve stable and nonaggressive contacts and good durability after running for more than 250 hours at three different environment conditions. We can conclude that the SP-FD has the potential of 3 Gbits/in2 FD
Keywords :
floppy discs; magnetic thin films; sputtered coatings; 3 Gbits/in2 floppy disk; aerodynamics consideration; fine protrusions; good durability; heat durable substrate; heat-durable undercoat; nonaggressive contacts; sputtered magnetic layer; underlayers; Disk recording; Floppy disks; High definition video; Magnetic heads; Magnetic properties; Magnetic recording; Optical sensors; Sputtering; Substrates; Testing;
Journal_Title :
Magnetics, IEEE Transactions on
