Patent ID: 7057859
Filing Date: 2006-06-06
Classification: B82Y,G11B

Abstract:
1. A magneto-resistive device comprising: a magneto-resistive layer formed on one surface side of a base and including a free layer; and a single-layer film formed to be in contact with an effective region effectively involved in detection of magnetism in said magneto-resistive layer without overlapping with said effective region, wherein said single-layer film is formed of an insulating material made of an oxide or a nitride including at least one element, the atomic weight of said at least one element being larger than that of silicon, said single-layer film excludes a layer for applying a biasing magnetic field to said free layer, said single-layer film is in contact with said effective region on at least one side of said effective region, and the layer for applying the biasing magnetic field to said free layer is not located on the at least one side of said effective region.