Patent ID: 9214624
Filing Date: 2015-12-15
Classification: G11C,H01L

Abstract:
1. A perpendicular magnetic tunnel junction (MTJ) apparatus comprising: a tunnel barrier layer deposited between a free layer and a reference layer; a tunnel magnetoresistance (TMR) enhancement buffer layer deposited between the tunnel barrier layer and the reference layer, the TMR enhancement buffer layer comprising a bcc (001) structure; and a non-magnetic amorphous superlattice TMR enhancement spacer deposited between the TMR enhancement buffer layer and the reference layer, in which the non-magnetic amorphous superlattice TMR enhancement spacer is arranged to block a template effect from a synthetic antiferromagnetic (SAF) layer and in which a center layer of the superlattice TMR enhancement spacer is thicker than outer layers of the superlattice TMR enhancement spacer.