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Title: Effect of substrate temperature on the magnetic properties of epitaxial sputter-grown Co/Pt

Epitaxial Co/Pt films have been deposited by dc-magnetron sputtering onto heated C-plane sapphire substrates. X-ray diffraction, the residual resistivity, and transmission electron microscopy indicate that the Co/Pt films are highly ordered on the atomic scale. The coercive field and the perpendicular magnetic anisotropy increase as the substrate temperature is increased from 100–250 °C during deposition of the Co/Pt. Measurement of the domain wall creep velocity as a function of applied magnetic field yields the domain wall pinning energy, which scales with the coercive field. Evidence for an enhanced creep velocity in highly ordered epitaxial Co/Pt is found.
Authors:
; ; ; ;  [1] ; ; ; ;  [2]
  1. School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT (United Kingdom)
  2. School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ (United Kingdom)
Publication Date:
OSTI Identifier:
22253259
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 26; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANISOTROPY; CREEP; DEPOSITION; DEPOSITS; EPITAXY; FILMS; MAGNETIC FIELDS; MAGNETIC FLUX; MAGNETIC PROPERTIES; MAGNETRONS; SAPPHIRE; SPUTTERING; SUBSTRATES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION