Alloy formation of Co/Ni/Pt(111)

Ho, H. Y.; Lin, Y. S.; Huang, Eddy; Chen, Y. J.; Shern, Ching-Song

doi:10.1016/j.susc.2006.10.028

Cited by 7 publications

(1 citation statement)

References 20 publications

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“…6 at T A < 495 K, after which it continued to decline. Earlier, our group studied the UPS profiles near the Fermi edge for the 2 ML Co/Pt(111) 22) and 1 ML Co/1 ML Ni/Pt(111) 23) systems. The PMAs of both systems were enhanced by the annealing treatment owing to the formation of Co-Pt and Co-Ni-Pt alloys.…”

Section: Resultsmentioning

confidence: 99%

Surface Structural and Magnetic Properties of Cobalt Bilayer Deposited on Pt(111) with Ni Buffer Layer

Shern

2011

Jpn. J. Appl. Phys.

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A cobalt bilayer film was deposited on a monolayer (ML) Ni/Pt(111) surface at room temperature. The dependencies of the structural and magnetic properties of the surface on the annealing temperature were investigated. During the annealing, it was found that the formation of Co–Ni alloy occurs before the formation of Co–Ni–Pt alloy. After high-temperature annealing, the surface consisted of Co–Ni–Pt alloys with a Pt-rich phase. We found that the perpendicular magnetic anisotropy (PMA) contribution of the Co–Ni–Pt alloy at the surface was greater than that of the Co–Pt alloy below. The ultraviolet photoelectron spectrum (UPS) of the 2 ML Co/1 ML Ni/Pt(111) system showed a redistribution of electron density on the surface after annealing. The UPS peak height near the Fermi edge was mostly dependent on the surface composition. However, the change in the work function was not dependent on the PMA after high-temperature annealing. The strength of the PMA of this system can be tuned to a desired level by annealing without affecting the work function.

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Section: Resultsmentioning

confidence: 99%