Fe equilibrium and kinetic segregations of surface/subsurface layers upon annealing Fe on Pt(111) in vacuum/oxygen/hydrogen environment

Zhong, Fengmin; Yan, Yinfei; Lian, Songyou; Wang, J.Y.; Xu, Congkang

doi:10.1016/j.susc.2023.122263

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Characterization Of Surface Segregation: Approaches1

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2024

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“…The modified Darken model allows simulating the equilibrium phenomena and kinetic segregation of surface and near-surface layers by introducing the oxygen and hydrogen adsorption enthalpies. 79 Using the example of the Fe–Pt system, this study solves for the equilibrium concentrations in the near-surface layers. It reveals that the process of impurity release to the surface increases in the following order of atmospheres: vacuum, hydrogen, and oxygen.…”

Section: Characterization Of Surface Segregation: Approachesmentioning

confidence: 99%