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Title: Perpendicular magnetic tunnel junctions with double barrier and single or synthetic antiferromagnetic storage layer

The magnetic properties of double tunnel junctions with perpendicular anisotropy were investigated. Two synthetic antiferromagnetic references are used, while the middle storage magnetic layer can be either a single ferromagnetic or a synthetic antiferromagnetic FeCoB-based layer, with a critical thickness as large as 3.0 nm. Among the different achievable magnetic configurations in zero field, those with either antiparallel references, and single ferromagnetic storage layer, or parallel references, and synthetic antiferromagnetic storage layer, are of particular interest since they allow increasing the efficiency of spin transfer torque writing and the thermal stability of the stored information as compared to single tunnel junctions. The latter configuration can be preferred when stray fields would favour a parallel orientation of the reference layers. In this case, the synthetic antiferromagnetic storage layer is also less sensitive to residual stray fields.
Authors:
; ; ; ; ;  [1] ;  [2] ;  [2]
  1. Univ. Grenoble Alpes, INAC-SPINTEC, F-38000 Grenoble (France)
  2. (France)
Publication Date:
OSTI Identifier:
22412942
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 23; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; ANTIFERROMAGNETISM; COBALT BORIDES; COMPARATIVE EVALUATIONS; DIFFUSION BARRIERS; FERROMAGNETIC MATERIALS; FERROMAGNETISM; IRON COMPOUNDS; LAYERS; MAGNETIC PROPERTIES; PHASE STABILITY; SPIN; TORQUE; TUNNEL EFFECT