Growth mechanism of Ni on Pt(110) at low temperature

C. S. Shern; J. S. Tsay; Tsu Yi Fu

doi:10.1016/0169-4332(95)00206-5

Growth mechanism of Ni on Pt(110) at low temperature

C. S. Shern, J. S. Tsay, Tsu Yi Fu

Department of Physics

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

7 Citations (Scopus)

Abstract

Ni atoms deposited on Pt(110)-(1 × 1) and (1 × 2) surfaces are studied and compared at 130 K. The Auger uptake curve of Ni on the Pt(110)-(1 × 1) surface shows an exponential-type growth. The intensities of all (1 × 1) LEED spots decrease gradually and exhibit no oscillation during the deposition. These results demonstrate that this growth follows the Volmer-Weber mode. On the other hand, the Auger uptake curve of Ni on the Pt(110)-(1 × 2) surface shows a premonolayer break with an initial linear growth. The LEED pattern changes from (1 × 2) to a pseudo-(1 × 1) after Ni atoms fill the sites of the missing rows. After that, the Auger uptake curve turns to an exponential-type and the LEED spot patterns all diminish gradually when more Ni atoms are deposited on the Pt(110)-(1 × 2) surface. These results demonstrate that the growth of Ni on the Pt(110)-(1 × 2) surface follows the Stranski-Krastanov (SK) mode. The growth mechanism is discussed by considering the lattice mismatch, diffusion, and the surface free energies of the adsorbate and the substrate.

Original language	English
Pages (from-to)	74-78
Number of pages	5
Journal	Applied Surface Science
Volume	92
DOIs	https://doi.org/10.1016/0169-4332(95)00206-5
Publication status	Published - 1996 Feb

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Physics and Astronomy(all)
Surfaces and Interfaces
Surfaces, Coatings and Films

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title = "Growth mechanism of Ni on Pt(110) at low temperature",

abstract = "Ni atoms deposited on Pt(110)-(1 × 1) and (1 × 2) surfaces are studied and compared at 130 K. The Auger uptake curve of Ni on the Pt(110)-(1 × 1) surface shows an exponential-type growth. The intensities of all (1 × 1) LEED spots decrease gradually and exhibit no oscillation during the deposition. These results demonstrate that this growth follows the Volmer-Weber mode. On the other hand, the Auger uptake curve of Ni on the Pt(110)-(1 × 2) surface shows a premonolayer break with an initial linear growth. The LEED pattern changes from (1 × 2) to a pseudo-(1 × 1) after Ni atoms fill the sites of the missing rows. After that, the Auger uptake curve turns to an exponential-type and the LEED spot patterns all diminish gradually when more Ni atoms are deposited on the Pt(110)-(1 × 2) surface. These results demonstrate that the growth of Ni on the Pt(110)-(1 × 2) surface follows the Stranski-Krastanov (SK) mode. The growth mechanism is discussed by considering the lattice mismatch, diffusion, and the surface free energies of the adsorbate and the substrate.",

author = "Shern, {C. S.} and Tsay, {J. S.} and Fu, {Tsu Yi}",

year = "1996",

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doi = "10.1016/0169-4332(95)00206-5",

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T1 - Growth mechanism of Ni on Pt(110) at low temperature

AU - Shern, C. S.

AU - Tsay, J. S.

AU - Fu, Tsu Yi

PY - 1996/2

Y1 - 1996/2

N2 - Ni atoms deposited on Pt(110)-(1 × 1) and (1 × 2) surfaces are studied and compared at 130 K. The Auger uptake curve of Ni on the Pt(110)-(1 × 1) surface shows an exponential-type growth. The intensities of all (1 × 1) LEED spots decrease gradually and exhibit no oscillation during the deposition. These results demonstrate that this growth follows the Volmer-Weber mode. On the other hand, the Auger uptake curve of Ni on the Pt(110)-(1 × 2) surface shows a premonolayer break with an initial linear growth. The LEED pattern changes from (1 × 2) to a pseudo-(1 × 1) after Ni atoms fill the sites of the missing rows. After that, the Auger uptake curve turns to an exponential-type and the LEED spot patterns all diminish gradually when more Ni atoms are deposited on the Pt(110)-(1 × 2) surface. These results demonstrate that the growth of Ni on the Pt(110)-(1 × 2) surface follows the Stranski-Krastanov (SK) mode. The growth mechanism is discussed by considering the lattice mismatch, diffusion, and the surface free energies of the adsorbate and the substrate.

AB - Ni atoms deposited on Pt(110)-(1 × 1) and (1 × 2) surfaces are studied and compared at 130 K. The Auger uptake curve of Ni on the Pt(110)-(1 × 1) surface shows an exponential-type growth. The intensities of all (1 × 1) LEED spots decrease gradually and exhibit no oscillation during the deposition. These results demonstrate that this growth follows the Volmer-Weber mode. On the other hand, the Auger uptake curve of Ni on the Pt(110)-(1 × 2) surface shows a premonolayer break with an initial linear growth. The LEED pattern changes from (1 × 2) to a pseudo-(1 × 1) after Ni atoms fill the sites of the missing rows. After that, the Auger uptake curve turns to an exponential-type and the LEED spot patterns all diminish gradually when more Ni atoms are deposited on the Pt(110)-(1 × 2) surface. These results demonstrate that the growth of Ni on the Pt(110)-(1 × 2) surface follows the Stranski-Krastanov (SK) mode. The growth mechanism is discussed by considering the lattice mismatch, diffusion, and the surface free energies of the adsorbate and the substrate.

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