Apparatus for use in magnetic-field detection and generation devices
AssigneeInternational Business Machines Corporation
InventorsChristoph Gerber, Johannes W. Hilgenkamp, Jochen Mannhart
Life of this patent
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Abstract
A magnetic-field-detecting and/or generating apparatus comprises a non-ferromagnetic tip with a longitudinal member of ferromagnetic material embedded in the tip. Further, magnetic-shield means is arranged around the tip. At the end of the longitudinal member a magnetic-field device is arranged. The same principle can be applied to read/write heads for use in magnetic-storage devices.
Claims16
Magnetic-field-detecting apparatus, comprising a tip (2) having an apex, said tip made of a non-ferromagnetic material (2) in which a longitudinal member (3) made of ferromagnetic material is at least partly embedded and around which magnetic-shield means (5) is arranged, and comprising a magnetic-field device (6) positioned at one end of said longitudinal member (3) for measuring a magnetic field, wherein said magnetic-shield means is tapered and narrowed at said apex for increased resolution.
Apparatus for generating a magnetic-field comprising a tip (2) having an apex, said tip made of a non-ferromagnetic material (2) in which a longitudinal member (3) made of ferromagnetic material is at least partly embedded and around which magnetic-shield means (5) is arranged, and comprising a magnetic-field device (6) positioned at one end of said longitudinal member (3) for generating a magnetic field, wherein said magnetic-shield means is tapered and narrowed at said apex for increasing resolution of an effective magnetic field generated at the apex.
Dependencies are inferred from the claim text.