Patent ID: 6839205
Filing Date: 2005-01-04
Classification: B82Y,G11B,H01L

Abstract:
1. A magneto-resistive device comprising: a first electrode formed on one surface side of a base; a magneto-resistive layer formed on one surface side of said first electrode, the one surface side of said first electrode being opposite to other surface side of said first electrode facing to said base; and a second electrode formed on one surface side of said magneto-resistive layer, the one surface side of said magneto-resistive layer being opposite to other surface of said magneto-resistive layer facing to said first electrode; wherein said magneto-resistive layer includes a non-magnetic layer; a free layer formed on one surface side of said non-magnetic layer; a pinned layer formed on other surface side of said non-magnetic layer; and a pinning layer formed on one surface side of said pinned layer, the one surface side of said pinned layer being opposite to other surface of said pinned layer facing to said non-magnetic layer; and said pinning layer is formed in a region which substantially overlaps with an effective region in a film plane direction in which a current flows in a direction substantially perpendicular to the film plane direction between said first electrode and said second electrode in a predetermined thickness, and is formed in a region which does not substantially overlap with said effective region substantially in the same thickness as said predetermined thickness or in a thickness smaller than said predetermined thickness, continuous from said region which substantially overlaps with said effective region.