Patent ID: 11887641
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. A method of forming a memory device, comprising:
forming a magnetic tunnel junction pillar surrounded by sidewall spacers, the magnetic tunnel junction pillar located between a top electrode and a bottom electrode;
forming an amorphous dielectric hardmask in contact with a first portion of an uppermost surface of the magnetic tunnel junction pillar;
forming a first portion of a metal layer on opposite sidewalls of the amorphous dielectric hardmask, the first portion of the metal layer being in contact with a second portion of the uppermost surface of the magnetic tunnel junction pillar extending outwards from the amorphous dielectric hardmask and in contact with an uppermost surface of the sidewall spacers, the first portion of the metal layer providing the top electrode;
forming a dielectric underlayer in contact with a first portion of a bottommost surface of the magnetic tunnel junction pillar; and
forming a second portion of the metal layer on opposite sidewalls of the dielectric underlayer, the second portion of the metal layer being in contact with a second portion of the bottommost surface of the magnetic tunnel junction pillar extending outwards from the dielectric underlayer and in contact with a bottommost surface of the sidewall spacers, the second portion of the metal layer providing the bottom electrode.