Patent ID: 7394122

Claim:
An MTJ MRAM cell formed at an intersection of ultra-thin word and bit lines comprising: an ultra-thin bit line formed of high conductivity material, having a thickness that is less than 100 nm, having an upper surface and a lower surface and extending in a first direction within a first horizontal plane; an ultra-thin write word line formed of high conductivity material, having a thickness that is less than 100 nm, having an upper surface and a lower surface and 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 write word line passes vertically over said bit line; 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 word line and said bit line; and a conducting electrode having an upper surface and a lower surface contacting the lower surface of said cell element, said cell element being formed on said electrode.