Patent ID: 6612018
Filing Date: 2003-09-02
Classification: B82Y,G11B,Y10T

Abstract:
A method of making a combined read and write head that has an air bearing surface (ABS) comprising:making a read head including: forming a ferromagnetic first shield layer; forming a nonmagnetic electrically insulative first gap layer on the first shield layer; forming a spin valve sensor on the first gap layer as follows: forming a pinning layer on the first gap layer that has magnetic spins oriented in a first predetermined direction; forming an antiparallel (AP) pinned layer as follows: forming a first ferromagnetic film of Co90Fe10 interfacing the pinning layer with a magnetic moment pinned parallel to said first predetermined direction; forming an AP coupling film interfacing the first ferromagnetic film of Co90Fe10; and forming a second ferromagnetic film of Co90Fe10 interfacing the AP coupling film that has a magnetic moment pinned in a second predetermined direction that is antiparallel to said first predetermined direction; forming a nonmagnetic electrically conductive first spacer layer interfacing the second ferromagnetic film of Co90Fe10 of the AP pinned layer; and forming a ferromagnetic free layer interfacing the first spacer layer that has a magnetic moment that is free to rotate relative to the second predetermined direction of the AP pinned layer in response to an applied field; forming first and second electrically conductive lead layers on the first gap layer and connected to the spin valve sensor; forming a nonmagnetic electrically insulative second gap layer on the spin valve sensor, the lead layers and the first gap layer; and forming a ferromagnetic second shield layer on the second gap layer; making a write head on the read head including: â€ƒforming a write gap layer and an insulation stack with a coil layer embedded therein on the second shield layer so that the second shield layer also functions as a first pole piece for the write head; and â€ƒforming a second pole piece layer on the insulation stack and the write gap and connected at a back gap to the first pole piece.