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Title: Thermally enhanced perpendicular magnetic anisotropy behaviors of ultrathin [Co/Pd]{sub n} multilayers via NiO{sub x} capping layer

We report the enhanced perpendicular magnetic anisotropy (PMA) features of ultrathin [Co/Pd]{sub 3} multilayers (MLs) employing a NiO{sub x} insertion layer at high annealing temperatures. Thermally enhanced PMA in [Co/Pd]{sub 3}/NiO{sub x} (capping layer) MLs were achieved at a specific capping layer thickness, while no PMA responses were observed for a NiO{sub x} (buffer layer)/[Co/Pd]{sub 3} ML, regardless of NiO{sub x} thickness. X-ray diffraction observations, including rocking curves, identified the relatively different crystalline characteristics of the NiO{sub x} capping and buffer layers. Origin of the enhanced PMAs of [Co/Pd]{sub 3} MLs containing a NiO{sub x} capping layer is described based on the NiO{sub x} capping effect possibly providing additional Co/Oxide i-PMA under high-temperature annealing.
Authors:
 [1] ; ; ;  [2] ;  [3] ;  [2] ;  [4]
  1. Nano Quantum Electronics Lab, Department of Electronics and Computer Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of)
  2. Novel Functional Materials and Devices Laboratory, Research Institute for Natural Science, Department of Physics, Hanyang University, Seoul 133-791 (Korea, Republic of)
  3. Division of Nano-Scale Semiconductor Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of)
  4. (Korea, Republic of)
Publication Date:
OSTI Identifier:
22423742
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 22; 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; ANNEALING; COBALT; LAYERS; NEUTRON DIFFRACTION; NICKEL OXIDES; PALLADIUM; X-RAY DIFFRACTION