Patent ID: 9466789
Filing Date: 2016-10-11
CPC Classification: G01R,G11B,G11C,H01F,H01L,H03B,Y10T

Claim Text:
1. A method of forming a magnetic device having high perpendicular magnetic anisotropy (PMA) comprising: (a) depositing a seed layer on a substrate; (b) forming a reference layer on the seed layer wherein the reference layer has a RL1/DL1/spacer/DL2/RL2 configuration in which the RL1 and RL2 layers exhibit perpendicular magnetic anisotropy, the spacer induces RKKY (antiferromagnetic coupling) between the RL1 and RL2 layers, and DL1 and DL2 are dusting layers which enhance the RKKY coupling between the RL1 and RL2 layers; (c) forming a CoFeB/Co transitional layer on the RL2 layer; (d) forming a non-magnetic spacer on the reference layer; (e) depositing a free layer on the non-magnetic spacer; (f) depositing a cap layer on the free layer to give a multilayer stack with a seed/reference layer/non-magnetic spacer/free layer/cap layer configuration; and (g) annealing the multilayer stack.