Patent ID: 8395199

Claim:
A resistive random access memory (RRAM), comprising: a. a first metal electrode layer; b. an insulator material above the first metal electrode layer wherein the insulator material is patterned with openings and the openings are without the insulator material above the first metal electrode layer; c. a Pr 1-x Ca x MnO 3 (PCMO) layer forming one or more self-aligned RRAM cells and an insulation surrounding the one or more self-aligned RRAM cells above the first metal electrode layer and the insulator material, wherein the PCMO layer comprises a first portion and a second portion, the first portion located substantially above the first metal electrode layer in the openings of the insulator material, being substantially polycrystalline and forming the one or more self-aligned RRAM cells, and the second portion located substantially above the insulator material, being substantially amorphous and insulating, and forming the insulation surrounding each of the one or more self-aligned RRAM cells; and d. a second metal electrode layer deposited above the PCMO layer thus forming the RRAM.