Patent ID: 9647204
Date: 2017-05-09
CPC Classifications: G11C,H01L

Claim:
1. A magnetic memory cell, comprising: a reference magnetic layer comprising multiple cobalt (Co)-containing layers oriented in a stack, wherein adjacent Co-containing layers in the stack are separated by an iridium (Ir)-containing layer such that the adjacent Co-containing layers in the stack are anti-parallel coupled by the Ir-containing layer therebetween, and wherein an even number of the Co-containing layers is present in the stack such that the stack comprises a positive integer N number of pairs of the Co-containing layers; and a free magnetic layer separated from the reference magnetic layer by a barrier layer, wherein a thickness of the Co-containing layers in each of the pairs depends on a location of the Co-containing layers in the stack relative to the free magnetic layer such that in each of the pairs, the Co-containing layer located in the stack closer to the free magnetic layer is thinner than the Co-containing layer located in the stack farther away from the free magnetic layer.