Patent ID: 7335961
Filing Date: 2008-02-26
Classification: G11C,H01L

Abstract:
1. A thermally stable and easily switchable MTJ MRAM cell comprising: A substrate; a composite bit line formed in a horizontal plane on said substrate, said bit line extending in a first direction and said bit line further comprising a layer of material having high electrical conductivity and having a top surface and a bottom surface, each of said surfaces being horizontal and planar and there being a horizontally planar adjacent soft magnetic layer (SAL) formed only on said bottom surface wherein said SAL has a magnetic dipole moment M a write word line formed in a horizontal plane vertically separated from said composite bit line, said write word line extending in a second direction that is perpendicular to said first direction; a horizontally multilayered magnetic tunnel junction (MTJ) element formed between said word line and said bit line, said element including a magnetically free layer having a magnetic dipole moment, M