Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2006-02-13
2010-06-15
Miller, Brian E (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
C360S321000, C257S421000
Reexamination Certificate
active
07738217
ABSTRACT:
A magnetic head of the present application has a sensor which employs the extraordinary magnetoresistance (EMR) effect. The magnetic head includes a body of semiconductor material positioned over a tail end of a carrying mechanism; a field receiving surface of the body oriented perpendicular to a sensing plane of the magnetic head; an electrically conducting shunt coupled to a first end of the body; a plurality of electrically conducting contacts coupled to a second end of the body opposite the first end; and a magnetic flux guide having a first end at least partially formed over the field receiving surface and a second end exposed at the sensing plane. Advantageously, the magnetic flux guide orients a signal field of recorded data from a magnetic medium in a suitable direction for the field receiving surface, at least partially shields the field receiving surface magnetically, and allows for positioning of the magnetic head on the tail end of the carrying mechanism. Preferably, the slider over which the body is formed is made from a material of similar crystal structure, but higher electrical resistance, as the material of the body. In this way, the body may be grown epitaxially from the slider and be integrally formed therewith.
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Hitachi Global Storage Technologies - Netherlands B.V.
Miller Brian E
Nader Rambod
Oskorep, Esq. John J.
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