Patent ID: 7183120
Filing Date: 2007-02-27
Classification: B82Y,G01R,H01F,H01L

Abstract:
1. A method for fabricating a magnetoresistive device comprising, in combination: forming a current-in-plane magnetoresistive stack; forming a substantially-antireflective-cap layer over the current-in-plane magnetoresistive stack, wherein the substantially-antireflective-cap layer has a sufficiently high resistivity so to limit current shunting of the current-in-plane magnetoresistive stack through the substantially-antireflective-cap layer, wherein the substantially-antireflective-cap layer is usable as an etch stop for the current-in-plane magnetoresistive stack, and wherein the substantially-anti-reflective-cap layer is in contact with the magnetoresistive stack; forming a dielectric layer over the substantially-antireflective-cap layer; patterning the dielectric layer in the form of at least one active region, wherein the active region is oriented normal to the substantially-antireflective-cap layer; and forming an insulating layer over a substrate and under the current-in-plane magnetoresistive stack.