公开(公告)号：DE69810626D1

公开(公告)日：2003-02-13

申请号：DE69810626

申请日：1998-10-12

Applicant: IBM

Inventor： ALLENSPACH ROLF ,  BISCHOF ANDREAS ,  DUERIG URS R

IPC: G11B5/65 ,  G11B5/00 ,  G11B5/64 ,  G11B5/66 ,  G11B5/73 ,  G11B5/84 ,  G11B5/855 ,  H01F41/34 ,  G11B3/70 ,  G11B5/62 ,  G11B11/00 ,  G11B11/03 ,  G11B9/10

Abstract: A method of generating or modifying patterns of topically specific magnetic modifications in an at least potentially ferromagnetic surface comprising the step of subjecting said surface to a controlled impact of energized subatomic particles, preferably in the form of electron radiation, directed at said surface for producing a predetermined pattern of discrete magnetized areas on said surface. The method serves to increase the density of magnetically coded information on magnetic media, such as hard discs.

公开(公告)号：DE69810626T2

公开(公告)日：2003-09-18

申请号：DE69810626

申请日：1998-10-12

Applicant: IBM

Inventor： ALLENSPACH ROLF ,  BISCHOF ANDREAS ,  DUERIG URS R

IPC: G11B5/65 ,  G11B5/00 ,  G11B5/64 ,  G11B5/66 ,  G11B5/73 ,  G11B5/84 ,  G11B5/855 ,  H01F41/34 ,  G11B3/70 ,  G11B5/62 ,  G11B11/00 ,  G11B11/03 ,  G11B9/10

Abstract: A method of generating or modifying patterns of topically specific magnetic modifications in an at least potentially ferromagnetic surface comprising the step of subjecting said surface to a controlled impact of energized subatomic particles, preferably in the form of electron radiation, directed at said surface for producing a predetermined pattern of discrete magnetized areas on said surface. The method serves to increase the density of magnetically coded information on magnetic media, such as hard discs.