Perpendicular magnetic anisotropy properties of CoFeB/Pd multilayers

Jong Ho Jung, Sang Ho Lim, Seong Rae Lee

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15 Citations (Scopus)

Abstract

The perpendicular magnetic anisotropy (PMA) properties of CoFeB/Pd multilayers are investigated as functions of the thickness of the constituent layers of the multilayers and of the substrate type. A relatively strong PMA is formed at small CoFeB thicknesses of 0.3 and 0.5 nm over the entire Pd thickness range of 0.47 to 1.26 nm. At a fixed CoFeB thickness, the PMA tends to increase with increasing Pd thickness and this behavior can be attributed to the fact that the interface tends to become flatter and smoother at ahig eli er Pd thicknesss, leading to a stronger surface anisotropy. A stronger PMA is observed for the glass substrate than for the MgO substrate. Since the thermal stress formed at the CoFeB layer is tensile for both the glass and MgO substrates, the magne-toelastic interactions suggest the possibility of forming a Co-Pd alloy with a negative saturation magnetostriction at the CoFeB/Pd inte rfaces.

Original languageEnglish
Pages (from-to)6233-6236
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume11
Issue number7
DOIs
Publication statusPublished - 2011 Jul 1

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Keywords

  • CoFeB/Pd Multilayers
  • Magnetoelastic Coupling
  • Perpendicular Magnetic Anisotropy
  • Seed Layer Effects
  • Substrate Effects
  • Surface Anisotropy

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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