Patent ID: 7394123

Claim:
An MTJ MRAM cell formed at an intersection of ultra-thin word and bit lines comprising: an ultra-thin bit line, having an upper surface and a lower surface and formed of high conductivity material, extending in a first direction within a first horizontal plane and having a thickness, t b , that is less than 100 nm; an ultra-thin write word line, having an upper surface and a lower surface and formed of high conductivity material, said write word line extending in a direction orthogonal to said first direction in a second horizontal plane that is vertically separated from said first horizontal plane and wherein said ultra-thin write word line passes vertically over said ultra-thin bit line to form a vertically separated intersection with said ultra-thin bit line and said ultra-thin word line having a thickness, t w , that is less than 100 nm; a horizontally multilayered magnetic tunnel junction (MTJ) cell element, having an upper surface and a lower surface and including a magnetically free layer, formed at said intersection of said ultra-thin word line and said ultra-thin bit line.