The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 08, 1997
Filed:
Feb. 15, 1995
International Business Machines Corporation, Armonk, NY (US);
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.