Title :
Development of high density perpendicular magnetic recording system using a probe head of sharpened optical fiber
Author :
Nakagawa, Shigeki ; Hiraide, Kazunari ; Naoe, Masahiko
Author_Institution :
Dept. of Phys. Electron., Tokyo Inst. of Technol., Japan
fDate :
9/1/1999 12:00:00 AM
Abstract :
A new type of single pole head for both reading and writing using an extremely sharpened optical fiber probe is proposed for perpendicular magnetic recording to attain ultra high areal density. For the writing head, the head field distribution was calculated by means of a finite integration element (FIM) method and it was shown that the field from head tip to the recording layer was successfully increased up to 4.8 kOe by attaching a ferrite-return-pass around the writing head probe. For a read-out head, the calculation of the magnetic transcription from the recording layer to the head tip indicated that magnetic transcription could be obtained up to 270 kfrpi
Keywords :
fibre optic sensors; finite element analysis; integration; magneto-optical recording; perpendicular magnetic recording; ferrite-return-pass; finite integration element method; head field distribution; high density perpendicular magnetic recording; magnetic transcription; magnetooptical recording; probe head; reading head; sharpened optical fiber; single pole head; ultra high areal density; writing head; Amorphous magnetic materials; Magnetic domains; Magnetic flux; Magnetic heads; Optical fiber polarization; Optical fibers; Optical recording; Perpendicular magnetic recording; Probes; Writing;
Journal_Title :
Magnetics, IEEE Transactions on
