Patent ID: 8953285
Filing Date: 2015-02-10
Classification: B82Y,G01R,G11B,H01F,H01L

Abstract:
1. A magneto-resistive (MR) sensor, comprising: (a) a bottom shield having a top surface; (b) a patterned sensor stack of layers having a sidewall contacting a top shield, and including a seed layer consisting of Ru, Ti, Cu, Ag, Au, NiFeCr, CrTi, or combinations of the aforementioned elements that contacts the bottom shield top surface, a magnetic free layer consisting of (Co/Ni) (c) an insulation layer adjoining the sidewall of the sensor stack layers and formed on the bottom shield top surface adjacent to the sensor stack sidewall; and (d) the top shield contacting a top surface of the patterned sensor stack such that there is electrical contact between the top and bottom shields, the top shield serves as a lead to enable a current to flow between the top shield and bottom shield and through the patterned stack of layers, said top shield includes side shield sections formed on and adjoining the insulation layer, each side shield section has a bottom surface formed below a bottom surface of the free layer.