Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2008-01-28
2011-10-11
Heinz, A. J. (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
C360S322000, C360S324000
Reexamination Certificate
active
08035927
ABSTRACT:
An extraordinary magnetoresistive sensor (EMR sensor) having a lead structure that is self aligned with a magnetic shunt structure. To form an EMR sensor according to an embodiment of the invention, a plurality of layers are deposited to form quantum well structure such as a two dimensional electron gas structure (2DEG). A first mask structure is deposited having two openings, and a material removal process is performed to remove portions of the sensor material from areas exposed by the openings. The distance between the two openings in the first mask defines a distance between a set of leads and the shunt structure. A non-magnetic metal is then deposited. A second mask structure is then formed to define shape of the leads.
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Boone, Jr. Thomas Dudley
Folks Liesl
Fontana, Jr. Robert E.
Gurney Bruce Alvin
Katine Jordan Asher
Heinz A. J.
Hitachi Global Storage Technologies - Netherlands B.V.
Zilka-Kotab, PC
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