Patent ID: 9711713
Date: 2017-07-18
CPC Classifications: H01L

Claim:
1. A semiconductor structure, comprising: an N a diffusion barrier layer over the N a first deposition of electrode material over the diffusion barrier layer; a second deposition of electrode material over the first deposition of electrode material; a magnetic tunneling junction (MTJ) layer over the second deposition of electrode material; a top electrode over the MTJ layer; and an (N+1) wherein the diffusion barrier layer and the first deposition of electrode material are laterally in contact with a dielectric layer, the first deposition of electrode material spacing the diffusion barrier layer and the second deposition of electrode material apart, and N is an integer greater than or equal to 1; wherein a top surface of the diffusion barrier layer is uneven and a center region of the top surface is higher than an outer region of the top surface.