公开(公告)号：JP2000123363A

公开(公告)日：2000-04-28

申请号：JP28385399

申请日：1999-10-05

Applicant: IBM

Inventor： ROLF ALLENSPACH ,  ANDREAS BISKOV ,  DUERIG URS T

IPC: G11B5/65 ,  G11B5/00 ,  G11B5/64 ,  G11B5/66 ,  G11B5/73 ,  G11B5/84 ,  G11B5/855 ,  H01F41/34

Abstract: PROBLEM TO BE SOLVED: To extend the possibility of local formation or modification of a pattern of specific magnetization direction in a planar magnetic surface or in a magnetic film and to obtain an improved magnetic storage and recording device having one or more surfaces in which such patterns are formed. SOLUTION: A method for locally forming or modifying a pattern of specific magnetization modification in an at least potentially ferromagnetic surface includes a step for forming a prescribed pattern of discrete magnetization regions on the magnetic surface preferably by exposing the magnetic surface to the bombardment of activated subatom corpuscles directed toward the magnetic surface in the form of electron beams. The method increases the density of information magnetically encoded on a magnetic medium such as a hard disk.