Patent ID: 11930717
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 15:
16. A method comprising:
forming a seed layer on a substrate;
forming a first ferromagnetic layer having intrinsic perpendicular magnetic anisotropy on the seed layer;
forming a first antiferromagnetic coupling layer on the first ferromagnetic layer;
forming a first CoFeB layer on the antiferromagnetic coupling layer;
forming a tunnel barrier layer on the first CoFeB layer;
forming a second CoFeB layer on the tunnel barrier layer;
forming a second antiferromagnetic coupling layer on the second CoFeB layer; and
forming a second ferromagnetic layer having intrinsic perpendicular magnetic anisotropy on the second antiferromagnetic coupling layer.