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US 6,583,966 B2Granted
Method to make a high data rate stitched writer for a giant magneto-resistive head
AssigneeHeadway Technologies, Inc.
InventorsCherng-Chyi Han, Chyu Jiuh Torng, Mao-Min Chen
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Abstract
A high data-rate stitched pole magnetic read/write-head combining sputtered and plated high magnetic moment materials and a method for fabricating same. The plating and stitching aspects of this fabrication allow the formation of a very narrow write-head, while the sputtering permits the use of high magnetic moment materials having high resistivity and low coercivity.
Claims1
A high data-rate stitched-pole magnetic read/write-head combining sputtered and plated high magnetic moment (HMM) materials, comprising:
- a planarized GMR read-head positioned between a lower magnetic shield and an upper magnetic shield;
- a three-layer structure formed on the upper magnetic shield of the read-head, comprising a first sputtered HMM material layer, over which is a patterned write-gap layer and over which is a second sputtered HMM material layer which is patterned and wherein said sputtered HMM material layers are formed of the HMM material FeAlN, CoFeV, CoFe or CoNiFe deposited to a thickness of between 500 angstroms and 1.5 microns;
- a plated pole piece consisting of HMM material formed on the patterned second sputtered HMM material layer of the three layer structure and trimmed to its dimensions;
- a final pole piece stitched to the structure.
1 more element
Dependencies are inferred from the claim text.