Patent ID: 6887719

Claim:
A process for defining a plurality of cell bodies in a magnetoresistive memory device, the process comprising: providing a substrate assembly; forming an insulating layer on the substrate assembly; forming a layer of photoresist on the insulating layer; patterning the layer of photoresist to define a plurality of openings in the photoresist, thereby exposing portions of the insulating layer through the openings in the photoresist; using the patterned photoresist as a mask for the insulating layer; removing material from the insulating layer that is exposed via the plurality of openings in the photoresist to form a plurality of cavities in the insulating layer, where a cavity is adapted to define a magnetoresistive cell body; forming layers of a magnetoresistive sandwich on the patterned photoresist and in the plurality of cavities; and removing the patterned photoresist, thereby lifting off layers of a magnetoresistive sandwich formed thereon while leaving behind layers of the magnetoresistive sandwich in the plurality of cavities of the insulating layer.