Patent ID: 9024399
Filing Date: 2015-05-05
Classification: H01L

Abstract:
1. A perpendicular spin-transfer torque magnetoresistive memory comprising a control circuitry and at least one memory cell comprising: a permeable bottom electrode provided on a surface of a substrate and connecting to a VIA of a select transistor; an etching stop layer provided on the top surface of the bottom electrode; an MTJ stack consisting of a seed layer provided on the top surface of the etching stop layer, a perpendicular MTJ multilayer provided on the top surface of the seed layer and a cap layer provided on the top surface of the perpendicular MTJ stack layer as an upper electric electrode; a dielectric ALD layer provided on the top surface of the etching stop layer and on the side wall of MTJ stack; a magnetic permeable dielectric layer provided on the top surface and surrounding the side wall of the dielectric ALD layer; a permeable bit line provided on the top surface of the cap layer and the magnetic permeable dielectric layer.