Growth Mechanism and Surface Alloy Formation of Ni on Pt(110)Surface

T. I. Fu; P. C. Liao; C. S. Shern

doi:10.1116/1.578585

Growth Mechanism and Surface Alloy Formation of Ni on Pt(110)Surface

T. I. Fu, P. C. Liao, C. S. Shern

Department of Physics

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Low-energy electron diffraction (LEED) and Auger electron spectroscopy were used to observe the growth mode of a nickel thin film on a Pt(110)-(1×2) surface at room temperature. The Auger uptake curve of this system shows a premonolayer break and a monolayer break with an initial linear growth. The LEED pattern changes from (1×2) to (l×l) after half a monolayer of Ni is deposited on the substrate. The LEED pattern then shows a gradual diminishing of all spots when more layers of the Ni thin film are deposited on the Pt(110) surface. These results demonstrate that the initial growth of Ni on the Pt(110)-(1×2) surface follows the Stranski-Krastanov mode; growth of 1 1/2 monolayer followed by agglomeration into three-dimensional islands. The growth mechanism is discussed. A surface alloy film then forms by heating this surface at T—350 °C.

Original language	English
Pages (from-to)	2407-2410
Number of pages	4
Journal	Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume	11
Issue number	5
DOIs	https://doi.org/10.1116/1.578585
Publication status	Published - 1993 Sept

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films

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title = "Growth Mechanism and Surface Alloy Formation of Ni on Pt(110)Surface",

abstract = "Low-energy electron diffraction (LEED) and Auger electron spectroscopy were used to observe the growth mode of a nickel thin film on a Pt(110)-(1×2) surface at room temperature. The Auger uptake curve of this system shows a premonolayer break and a monolayer break with an initial linear growth. The LEED pattern changes from (1×2) to (l×l) after half a monolayer of Ni is deposited on the substrate. The LEED pattern then shows a gradual diminishing of all spots when more layers of the Ni thin film are deposited on the Pt(110) surface. These results demonstrate that the initial growth of Ni on the Pt(110)-(1×2) surface follows the Stranski-Krastanov mode; growth of 1 1/2 monolayer followed by agglomeration into three-dimensional islands. The growth mechanism is discussed. A surface alloy film then forms by heating this surface at T—350 °C.",

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T1 - Growth Mechanism and Surface Alloy Formation of Ni on Pt(110)Surface

AU - Fu, T. I.

AU - Liao, P. C.

AU - Shern, C. S.

PY - 1993/9

Y1 - 1993/9

N2 - Low-energy electron diffraction (LEED) and Auger electron spectroscopy were used to observe the growth mode of a nickel thin film on a Pt(110)-(1×2) surface at room temperature. The Auger uptake curve of this system shows a premonolayer break and a monolayer break with an initial linear growth. The LEED pattern changes from (1×2) to (l×l) after half a monolayer of Ni is deposited on the substrate. The LEED pattern then shows a gradual diminishing of all spots when more layers of the Ni thin film are deposited on the Pt(110) surface. These results demonstrate that the initial growth of Ni on the Pt(110)-(1×2) surface follows the Stranski-Krastanov mode; growth of 1 1/2 monolayer followed by agglomeration into three-dimensional islands. The growth mechanism is discussed. A surface alloy film then forms by heating this surface at T—350 °C.

AB - Low-energy electron diffraction (LEED) and Auger electron spectroscopy were used to observe the growth mode of a nickel thin film on a Pt(110)-(1×2) surface at room temperature. The Auger uptake curve of this system shows a premonolayer break and a monolayer break with an initial linear growth. The LEED pattern changes from (1×2) to (l×l) after half a monolayer of Ni is deposited on the substrate. The LEED pattern then shows a gradual diminishing of all spots when more layers of the Ni thin film are deposited on the Pt(110) surface. These results demonstrate that the initial growth of Ni on the Pt(110)-(1×2) surface follows the Stranski-Krastanov mode; growth of 1 1/2 monolayer followed by agglomeration into three-dimensional islands. The growth mechanism is discussed. A surface alloy film then forms by heating this surface at T—350 °C.

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Growth Mechanism and Surface Alloy Formation of Ni on Pt(110)Surface

Abstract

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