Inverted magnetoresistive head
AssigneeSeagate Technology LLC
InventorsAllan E. Schultz, Frank S. Stageberg, Kenneth P. Ash, Brian S. Zak
Life of this patent
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Abstract
An inverted magnetoresistive head is disclosed. The inverted magnetoresistive head includes a reader positioned on top of a writer. The writer includes a bottom pole, a polymer insulator, a write gap, a pole tip and a top pole. The reader includes a bottom shield, a first reader gap, a magnetoresistive element, electrical contacts, a second reader gap and a shield.
Claims18
An inverted magnetoresistive head for reading information from a storage medium and for writing information to the storage medium, the magnetoresistive head comprising:
- a substrate having a recessed portion located distal from an air bearing surface of the head;
- a bottom pole positioned on top of the substrate;
- a polymer insulator positioned on top of the bottom pole above the recessed portion of the substrate distal from the air bearing surface of the head, the polymer insulator having a plurality of coils spaced throughout the polymer insulator, the polymer insulator having a planarized top surface;
- a write gap positioned on top of the polymer insulator distal to the air bearing surface and positioned on top of the bottom pole proximal to the air bearing surface, the write gap having a channel proximal to the air bearing surface and having a planarized top surface distal to the air bearing surface;
- a pole tip positioned in the channel of the write gap proximal to the air bearing surface;
- a top pole/bottom shield positioned on top of a portion of the write gap distal to the air bearing surface and the pole tip;
- a first reader gap positioned on top of the top pole/bottom shield;
- a magnetoresistive element positioned on top of the first reader gap proximal to the air bearing surface;
- electrical contacts positioned on top of the magnetoresistive element connecting the magnetoresistive element to a region outside the magnetoresistive head;
- a second reader gap on top of the magnetoresistive element and the contacts;
- and
- a shield positioned on top of the second reader gap.
An inverted magnetoresistive head for reading information from a storage medium and for writing information to the storage medium, the magnetoresistive head comprising:
- a substrate having a recessed portion located distal from an air bearing surface of the head;
- a bottom pole positioned on top of the substrate;
- a polymer insulator positioned on top of the bottom pole above the recessed portion of the substrate distal from the air bearing surface of the head, the polymer insulator having a plurality of coils spaced throughout the polymer insulator;
- a write gap positioned on top of the polymer insulator distal to the air bearing surface and positioned on top of the bottom pole proximal to the air bearing surface;
- a top pole positioned on top of the write gap;
- an oxide layer positioned on top of a first portion of the top pole proximal to the air bearing surface, the oxide layer and a second portion of the top pole distal to the air bearing surface having a continuous planarized top surface in a single plane;
- a bottom shield positioned on top of the second portion of the top pole distal to the air bearing surface and the oxide layer proximal to the air bearing surface, the bottom shield having a planarized top surface;
- a first reader gap positioned on top of the top pole;
- a magnetoresistive element positioned on top of the first reader gap proximal to the air bearing surface;
- electrical contacts positioned on top of the magnetoresistive element connecting the magnetoresistive element to a region outside the magnetoresistive head;
- a second reader gap on top of the magnetoresistive element and the contacts;
- and
- a shield positioned on top of the second reader gap.
Dependencies are inferred from the claim text.