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Strength of Perpendicular Magnetic Anisotropy at Bottom and Top Interfaces in [Pt/Co/Pt] Trilayers
- Authors
- Lee, T. Y.; Won, Y. C.; Son, D. S.; Lim, S. H.; Lee, S. -R.
- Issue Date
- 2014
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Magnetism in solids; Pt/Co/Pt trilayers; perpendicular magnetic anisotropy; interfacial anisotropy; thickness effects
- Citation
- IEEE MAGNETICS LETTERS, v.5
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE MAGNETICS LETTERS
- Volume
- 5
- ISSN
- 1949-307X
- 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.
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