Support effects on the atomic structure of ultrathin silica films on metals

Xin Yu; Bing Yang; Jorge Anibal Boscoboinik; Shamil Shaikhutdinov; Hans Joachim Freund

doi:10.1063/1.3703609

Support effects on the atomic structure of ultrathin silica films on metals

Xin Yu
, Bing Yang
, Jorge Anibal Boscoboinik
, Shamil Shaikhutdinov
, Hans Joachim Freund

Materials Science and Engineering

Fritz Haber Institute of the Max Planck Society

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

87 Scopus citations

Abstract

We studied the atomic structure of ultrathin silica films on Pt(111) in comparison with the previously studied films on Mo(112) and Ru(0001). The results obtained by scanning tunneling microscopy, photoelectron spectroscopy, and infrared reflection absorption spectroscopy suggest that the metal-oxygen bond strength plays the decisive role in the atomic structure of the silica overlayers on metal substrates. Metals with high oxygen adsorption energy favor the formation of the crystalline monolayer SiO _2.5 films, whereas noble metals form primarily vitreous SiO ₂ bilayer films. The metals with intermediate energies may form either of the structures or both coexisting. In the systems studied, the lattice mismatch plays only a minor role.

Original language	English
Article number	151608
Journal	Applied Physics Letters
Volume	100
Issue number	15
DOIs	https://doi.org/10.1063/1.3703609
State	Published - Apr 9 2012

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title = "Support effects on the atomic structure of ultrathin silica films on metals",

abstract = "We studied the atomic structure of ultrathin silica films on Pt(111) in comparison with the previously studied films on Mo(112) and Ru(0001). The results obtained by scanning tunneling microscopy, photoelectron spectroscopy, and infrared reflection absorption spectroscopy suggest that the metal-oxygen bond strength plays the decisive role in the atomic structure of the silica overlayers on metal substrates. Metals with high oxygen adsorption energy favor the formation of the crystalline monolayer SiO 2.5 films, whereas noble metals form primarily vitreous SiO 2 bilayer films. The metals with intermediate energies may form either of the structures or both coexisting. In the systems studied, the lattice mismatch plays only a minor role.",

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T1 - Support effects on the atomic structure of ultrathin silica films on metals

AU - Yu, Xin

AU - Yang, Bing

AU - Anibal Boscoboinik, Jorge

AU - Shaikhutdinov, Shamil

AU - Freund, Hans Joachim

PY - 2012/4/9

Y1 - 2012/4/9

N2 - We studied the atomic structure of ultrathin silica films on Pt(111) in comparison with the previously studied films on Mo(112) and Ru(0001). The results obtained by scanning tunneling microscopy, photoelectron spectroscopy, and infrared reflection absorption spectroscopy suggest that the metal-oxygen bond strength plays the decisive role in the atomic structure of the silica overlayers on metal substrates. Metals with high oxygen adsorption energy favor the formation of the crystalline monolayer SiO 2.5 films, whereas noble metals form primarily vitreous SiO 2 bilayer films. The metals with intermediate energies may form either of the structures or both coexisting. In the systems studied, the lattice mismatch plays only a minor role.

AB - We studied the atomic structure of ultrathin silica films on Pt(111) in comparison with the previously studied films on Mo(112) and Ru(0001). The results obtained by scanning tunneling microscopy, photoelectron spectroscopy, and infrared reflection absorption spectroscopy suggest that the metal-oxygen bond strength plays the decisive role in the atomic structure of the silica overlayers on metal substrates. Metals with high oxygen adsorption energy favor the formation of the crystalline monolayer SiO 2.5 films, whereas noble metals form primarily vitreous SiO 2 bilayer films. The metals with intermediate energies may form either of the structures or both coexisting. In the systems studied, the lattice mismatch plays only a minor role.

UR - https://www.scopus.com/pages/publications/84859797180

U2 - 10.1063/1.3703609

DO - 10.1063/1.3703609

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VL - 100

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 15

M1 - 151608

ER -

Support effects on the atomic structure of ultrathin silica films on metals

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