Patent ID: 7813165

Claim:
A ferromagnetic thin-film material based digital memory, said memory comprising: a plurality of bit structures, each supported on a substrate and separated from one another by spacer material therebetween, and that are electrically interconnected with information retrieval circuitry, said bit structures each comprising: a ferromagnetic material layer, and further comprising a magnetization reference layer having therein an antiferromagnetic material and a layer of electrically insulative material having a pair of major surfaces on opposite sides thereof each against a corresponding one of said ferromagnetic material and magnetization reference layers to thereby separate them from one another with said magnetization reference layer having a major surface adjacent to said substrate on a side thereof opposite said electrically insulative material layer; and first and second interconnection structure contacts supported by said substrate and positioned directly against antiferromagnetic material within said magnetization reference layer major surface spaced apart from one another whereby an electrical current can be established between them through said bit structure.