Strength of Perpendicular Magnetic Anisotropy at Bottom and Top Interfaces in [Pt/Co/Pt] Trilayers

T. Y. Lee, Y. C. Won, D. S. Son, S. H. Lim, S. R. Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The individual strengths of perpendicular magnetic anisotropy (PMA) at the bottom and top interfaces in sputtered [Pt/Co/Pt] trilayers are determined. The PMA strength from the top Co/Pt interface is significantly weaker than that from the bottom Pt/Co interface, indicating a similar difference in the interface quality. The contribution to the total anisotropy strength from the top Co/Pt interface increases with decreasing top Pt layer thickness; for a stack of Co thickness 1 nm, the contribution is only 10% for a top Pt layer of thickness 3.0 nm, but it increases to 32% for a Pt layer of thickness 0.2 nm.

Original languageEnglish
Article number6816093
JournalIEEE Magnetics Letters
Volume5
DOIs
Publication statusPublished - 2014

Keywords

  • Magnetism in solids
  • Pt/Co/Pt trilayers
  • interfacial anisotropy
  • perpendicular magnetic anisotropy
  • thickness effects

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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