High density recording and playback device

Details High density recording and playback device High density recording and playback device

1995-02-15

1997-07-08

Nguyen, Tan T.

Static information storage and retrieval

Systems using particular element

Molecular or atomic

365171, G11C 1106

Patent

active

056468822

ABSTRACT:
This invention provides a high switching rate tip for a high density recording system using scanning probe microscope (SPM). This new tip improves the switching rate in a data writing operation. This tip is constituted with a non-magnetic material core and a thin film coat of high permeable magnetic material. The diameter of the tip is on the order of 100 nm and the thickness of the high permeable magnetic coat is approximately 1000-2000 angstroms. The core is made of non magnetic material such as W, Pt, Ir, PtIr and Au. The magnetic coat is, for example, NiFe, CoZrNb, CoFeSiB. Further, this invention adopts a flat coil formed on a medium by lithography. The coil is used to switch the magnetization of the tip. This flat coil improves the process of the fabrication of a SXM recording device.

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