Invention Grant
- Patent Title: Magnetic tunnel junction with low series resistance
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Application No.: US16141195Application Date: 2018-09-25
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Publication No.: US10796833B2Publication Date: 2020-10-06
- Inventor: Nicholas A. Lanzillo , Benjamin D. Briggs , Michael Rizzolo , Theodorus E. Standaert , Lawrence A. Clevenger , James Stathis
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agency: Tutunjian & Bitetto, P.C.
- Agent Vazken Alexanian
- Main IPC: H01F10/32
- IPC: H01F10/32 ; H01L43/02 ; H01L43/12 ; H01F41/34 ; H01L43/10

Abstract:
An electrical device structure including a magnetic tunnel junction structure having a first tunnel junction dielectric layer positioned between a free magnetization layer and a fixed magnetization layer. A magnetization enhancement stack present on the magnetic tunnel junction structure. The magnetization enhancement stack includes a second tunnel junction layer that is in contact with the free magnetization layer of the magnetic tunnel junction structure, a metal contact layer present on the second tunnel junction layer, and a metal electrode layer present on the metal contact layer. A metallic ring on a sidewall of the magnetic enhancement stack, wherein a base of the metallic ring may be in contact with the free magnetization layer of the magnetic tunnel junction structure.
Public/Granted literature
- US20200098499A1 MAGNETIC TUNNEL JUNCTION WITH LOW SERIES RESISTANCE Public/Granted day:2020-03-26
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