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THIN-FILM MAGNETIC HEAD IN WHICH PERPENDICULAR MAGNETIC RECORD HEAD OVERLAPS ON REPRODUCING HEAD

  • US 20070195453A1
  • Filed: 02/20/2007
  • Published: 08/23/2007
  • Est. Priority Date: 02/20/2006
  • Status: Active Grant
First Claim
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1. A thin-film magnetic head comprising:

  • a perpendicular magnetic recording head formed on a reproducing head so as to overlap therewith, wherein the reproducing head has an upper shield layer and a lower shield layer opposed to each other in the thickness direction thereof and a reproducing element formed between the upper shield layer and the lower shield layer, wherein the reproducing head has a first magnetic layer including a major magnetic pole exposed from the opposed surface by a track width TW, a return-yoke layer opposite to the first magnetic layer with a gap layer interposed therebetween on the opposed surface, and a coil layer that generates a recording magnetic field provided between the first magnetic layer and the return-yoke layer, and wherein a gap in the thickness direction between the return-yoke layer and the upper shield layer is longer than that between the upper shield layer and the lower shield layer.

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