Anomalous behavior of LEED beam intensity during annealing

Tsu Yi Fu; T. F. Liu; C. W. Su; C. S. Shern; R. H. Chen

doi:10.1016/S0039-6028(00)00671-3

Anomalous behavior of LEED beam intensity during annealing

Tsu Yi Fu, T. F. Liu, C. W. Su, C. S. Shern, R. H. Chen

Department of Physics

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

Abstract

Low-energy electron diffraction was used to study the annealing effects of 1 ML Ag on the ultra-thin-film Co/Pt (111). The behavior of the specular beam intensity versus temperature is anomalous. Besides the normal Debye-Waller effect, a bend occurs at 550 K, and a dramatic increase occurs at a higher temperature. A corresponding study by Auger electron spectroscopy and ultraviolet photoelectron spectroscopy indicates that the bend results from the Co inter-diffusion. The anomalous increase indicates that a more stable state forms at a higher temperature. The Co coverage plays an important role in determining the turning temperature. Possible mechanisms are discussed.

Original language	English
Pages (from-to)	211-216
Number of pages	6
Journal	Surface Science
Volume	464
Issue number	2-3
DOIs	https://doi.org/10.1016/S0039-6028(00)00671-3
Publication status	Published - 2000 Oct 1

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/S0039-6028(00)00671-3

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title = "Anomalous behavior of LEED beam intensity during annealing",

abstract = "Low-energy electron diffraction was used to study the annealing effects of 1 ML Ag on the ultra-thin-film Co/Pt (111). The behavior of the specular beam intensity versus temperature is anomalous. Besides the normal Debye-Waller effect, a bend occurs at 550 K, and a dramatic increase occurs at a higher temperature. A corresponding study by Auger electron spectroscopy and ultraviolet photoelectron spectroscopy indicates that the bend results from the Co inter-diffusion. The anomalous increase indicates that a more stable state forms at a higher temperature. The Co coverage plays an important role in determining the turning temperature. Possible mechanisms are discussed.",

author = "Fu, {Tsu Yi} and Liu, {T. F.} and Su, {C. W.} and Shern, {C. S.} and Chen, {R. H.}",

note = "Funding Information: The authors would like to thank Miss Y.E. Wu for fruitful discussions. The research was supported by the National Science Council of ROC under Grant No. NSC 89-2112-M-003-014.",

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T1 - Anomalous behavior of LEED beam intensity during annealing

AU - Fu, Tsu Yi

AU - Liu, T. F.

AU - Su, C. W.

AU - Shern, C. S.

AU - Chen, R. H.

N1 - Funding Information: The authors would like to thank Miss Y.E. Wu for fruitful discussions. The research was supported by the National Science Council of ROC under Grant No. NSC 89-2112-M-003-014.

PY - 2000/10/1

Y1 - 2000/10/1

N2 - Low-energy electron diffraction was used to study the annealing effects of 1 ML Ag on the ultra-thin-film Co/Pt (111). The behavior of the specular beam intensity versus temperature is anomalous. Besides the normal Debye-Waller effect, a bend occurs at 550 K, and a dramatic increase occurs at a higher temperature. A corresponding study by Auger electron spectroscopy and ultraviolet photoelectron spectroscopy indicates that the bend results from the Co inter-diffusion. The anomalous increase indicates that a more stable state forms at a higher temperature. The Co coverage plays an important role in determining the turning temperature. Possible mechanisms are discussed.

AB - Low-energy electron diffraction was used to study the annealing effects of 1 ML Ag on the ultra-thin-film Co/Pt (111). The behavior of the specular beam intensity versus temperature is anomalous. Besides the normal Debye-Waller effect, a bend occurs at 550 K, and a dramatic increase occurs at a higher temperature. A corresponding study by Auger electron spectroscopy and ultraviolet photoelectron spectroscopy indicates that the bend results from the Co inter-diffusion. The anomalous increase indicates that a more stable state forms at a higher temperature. The Co coverage plays an important role in determining the turning temperature. Possible mechanisms are discussed.

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JO - Surface Science

JF - Surface Science

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Anomalous behavior of LEED beam intensity during annealing

Abstract

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