Method for fabricating cladding layer in top conductor

摘要

A method for cladding two or three sides of a top conductor for a magnetic memory device in ferromagnetic material includes forming a trench with side walls in a coating layer above the memory device. A first ferromagnetic material is deposited along the side walls of the trench. Any ferromagnetic material in a bottom of the trench can be removed. A conductor material is deposited in the trench over the memory device. A second ferromagnetic material is deposited over the conductor material in the trench to form a cladding of the ferromagnetic material around three side of the conductor.