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Title: Tuning giant anomalous Hall resistance ratio in perpendicular Hall balance

Anomalous Hall effect at room temperature in perpendicular Hall balance with a core structure of [Pt/Co]{sub 4}/NiO/[Co/Pt]{sub 4} has been tuned by functional CoO layers, where [Pt/Co]{sub 4} multilayers exhibit perpendicular magnetic anisotropy. A giant Hall resistance ratio up to 69 900% and saturation Hall resistance (R{sub S}{sup P}) up to 2590 mΩ were obtained in CoO/[Pt/Co]{sub 4}/NiO/[Co/Pt]{sub 4}/CoO system, which is 302% and 146% larger than that in the structure without CoO layers, respectively. Transmission electron microscopy shows highly textured [Co/Pt]{sub 4} multilayers and oxide layers with local epitaxial relations, indicating that the crystallographic structure has significant influence on spin dependent transport properties.
Authors:
;  [1] ;  [2] ;  [3] ;  [3] ;  [2] ;  [4] ; ;  [5] ;  [1]
  1. Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083 (China)
  2. (China)
  3. State Key Laboratory of Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)
  4. Department of Physics, Beijing University of Aeronautics and Astronautics, Beijing 100191 (China)
  5. Department of Materials Engineering, Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 84105 (Israel)
Publication Date:
OSTI Identifier:
22398898
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 15; 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; COBALT; COBALT OXIDES; CRYSTAL STRUCTURE; ELECTRIC CONDUCTIVITY; EPITAXY; HALL EFFECT; INTERFACES; LAYERS; NICKEL OXIDES; PLATINUM; SPIN; TEMPERATURE RANGE 0273-0400 K; TEXTURE; TRANSMISSION ELECTRON MICROSCOPY