Patent ID: 9595661
Date: 2017-03-14
CPC Classifications: G11C,H01L

Claim:
1. A magnetoresistive random access memory (MRAM) structure, comprising: a bottom electrode structure; a magnetic tunnel junction (MTJ) element over the bottom electrode structure, the MTJ element comprising: a top electrode having a first width over the first portion, the top electrode having sidewalls and protection spacers over a lower portion of the sidewalls, the protection spacers overlying the demagnetized second portion of the ferromagnetic free layer and exposing a top surface of the top electrode, wherein at least one of the protection spacers has a curved surface that is both aligned with the demagnetized second portion and extends from the demagnetized second portion to intersect the top electrode at a point that is aligned with an intersection between the first portion and the demagnetized second portion.