Patent ID: 6525913
Filing Date: 2003-02-25
Classification: G11B

Abstract:
A magnetic read head assembly comprising:a slider; a magnetic read head located on the slider; the magnetic read head including: nonmagnetic insulative first and second read gap layers; a read sensor; first and second hard bias layers and first and second lead layers connected to the read sensor; the read sensor, the first and second hard bias layers and the first and second lead layers being located between the first and second read gap layers; ferromagnetic first and second shield layers; the first and second read gap layers being located between the first and second shield layers; the first shield layer having a planar shield portion and first and second recessed shield portions with the planar shield portion located between the first and second recessed shield portions and wherein the planar shield portion is substantially flat and the first and second recessed portions are recessed with respect to the planar shield portion; the read sensor further being located between the planar shield portion of the first shield layer and the second shield layer; nonmagnetic insulative fist and second prefill layers with the first prefill layer being located in the first recessed shield portion and the second prefill layer being located in the second recessed shield portion; the first read gap layer being located on the planar shield portion and the first and second prefill layers; and the first shield layer being closer to the slider than the second shield layer.