公开(公告)号：US6011664A

公开(公告)日：2000-01-04

申请号：US521972

申请日：1995-08-31

Applicant: Mark Howard Kryder ,  Stanley H. Charap

Inventor： Mark Howard Kryder ,  Stanley H. Charap

IPC: G11B5/00 ,  G11B5/024 ,  G11B5/127 ,  G11B5/49 ,  G11B5/54 ,  G11B5/02 ,  G01N27/82 ,  G01R33/00 ,  G11B9/00

CPC classification number: G11B5/4969 ,  G11B5/00 ,  G11B5/127 ,  G11B5/54 ,  G11B2005/0005 ,  G11B2005/0021 ,  G11B5/024 ,  G11B5/4984 ,  Y10S977/865 ,  Y10S977/947

Abstract: Techniques for ultrahigh density writing on an erasable magnetic medium include using a micromachined mechanism having two probes for writing to the medium. Use of the two probe embodiment eliminates the need to change the magnetic orientation of the probe. In another embodiment, a single probe is provided which is heated to the vicinity of its Curie temperature to enable the magnetic orientation of the probe to be switched. The probe may be heated to its Curie temperature through the use of a heating element or a focused laser. In another embodiment of the present invention, either the magnetic orientation of the probe or the magnetic orientation of the medium may be switched through the combination of a static magnetic field, a radio frequency magnetic field and, under certain circumstances, the magnetic field of the probe. In all cases, the writing techniques enable information to be written to a magnetic medium in a manner which enables the information to be erased and the medium rewritten.

Abstract translation: 用于在可擦除磁性介质上超高密度写入的技术包括使用具有两个探针的微加工机构来写入介质。 使用两个探针实施例消除了改变探针的磁性取向的需要。 在另一个实施例中，提供单个探针，其被加热到其居里温度附近，以使得能够切换探针的磁性取向。 可以通过使用加热元件或聚焦激光将探针加热到其居里温度。 在本发明的另一个实施例中，可以通过静态磁场，射频磁场的组合来切换探针的磁性取向或介质的磁性取向，并且在某些情况下， 探测。 在所有情况下，写入技术使得能够以使得能够擦除信息并且介质被重写的方式将信息写入磁性介质。