Initial Fe3O4(100) Formation on Fe(100)

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Initial Fe3O4(100) Formation on Fe(100). / Soldemo, Markus; Vandichel, Matthias; Grönbeck, Henrik; Weissenrieder, Jonas.

julkaisussa: Journal of Physical Chemistry C, Vuosikerta 123, Nro 26, 12.06.2019, s. 16317-16325.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Harvard

Soldemo, M, Vandichel, M, Grönbeck, H & Weissenrieder, J 2019, 'Initial Fe3O4(100) Formation on Fe(100)', Journal of Physical Chemistry C, Vuosikerta. 123, Nro 26, Sivut 16317-16325. https://doi.org/10.1021/acs.jpcc.9b04625

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Vancouver

Author

Soldemo, Markus ; Vandichel, Matthias ; Grönbeck, Henrik ; Weissenrieder, Jonas. / Initial Fe3O4(100) Formation on Fe(100). Julkaisussa: Journal of Physical Chemistry C. 2019 ; Vuosikerta 123, Nro 26. Sivut 16317-16325.

Bibtex - Lataa

@article{a4757d26e9e54c3d969455c61a3dda1c,
title = "Initial Fe3O4(100) Formation on Fe(100)",
abstract = "The initial oxidation of Fe(100) at 400 °C has been studied by X-ray photoelectron spectroscopy (XPS), scanning tunneling microscopy (STM), and low-energy electron diffraction, in combination with density functional theory calculations. The first observed well-ordered surface oxide is formed at a coverage of ∼3 oxygen atoms per unreconstructed surface Fe(100) atom. STM shows that this surface oxide is terminated by straight atomic rows exhibiting a p(2 × 1) periodicity. However, already for oxide films with a coverage of ∼4 oxygen atoms (corresponding to one Fe3O4 unit cell thickness), wiggly atomic rows appear similar to the c(2 × 2) reconstructed Fe3O4(100)-surface with the Fe3O4 unit vectors rotated 45° to Fe(100). The wiggly rows are a consequence of subsurface cation iron vacancies, which previously have been observed for bulk surfaces. The formation of subsurface vacancies is supported by the XPS O 1s signature, which is modeled by considering the core-level shifts for all oxygen atoms in the film. Throughout the oxidation series, the microscopy results reveal a layer-by-layer (Frank-van der Merwe) growth.",
author = "Markus Soldemo and Matthias Vandichel and Henrik Gr{\"o}nbeck and Jonas Weissenrieder",
note = "K{\"a}sikirjoitus pyydetty toisessa (tuhotussa) tietueessa.",
year = "2019",
month = "6",
day = "12",
doi = "10.1021/acs.jpcc.9b04625",
language = "English",
volume = "123",
pages = "16317--16325",
journal = "Journal of Physical Chemistry C",
issn = "1932-7447",
publisher = "AMERICAN CHEMICAL SOCIETY",
number = "26",

}

RIS - Lataa

TY - JOUR

T1 - Initial Fe3O4(100) Formation on Fe(100)

AU - Soldemo, Markus

AU - Vandichel, Matthias

AU - Grönbeck, Henrik

AU - Weissenrieder, Jonas

N1 - Käsikirjoitus pyydetty toisessa (tuhotussa) tietueessa.

PY - 2019/6/12

Y1 - 2019/6/12

N2 - The initial oxidation of Fe(100) at 400 °C has been studied by X-ray photoelectron spectroscopy (XPS), scanning tunneling microscopy (STM), and low-energy electron diffraction, in combination with density functional theory calculations. The first observed well-ordered surface oxide is formed at a coverage of ∼3 oxygen atoms per unreconstructed surface Fe(100) atom. STM shows that this surface oxide is terminated by straight atomic rows exhibiting a p(2 × 1) periodicity. However, already for oxide films with a coverage of ∼4 oxygen atoms (corresponding to one Fe3O4 unit cell thickness), wiggly atomic rows appear similar to the c(2 × 2) reconstructed Fe3O4(100)-surface with the Fe3O4 unit vectors rotated 45° to Fe(100). The wiggly rows are a consequence of subsurface cation iron vacancies, which previously have been observed for bulk surfaces. The formation of subsurface vacancies is supported by the XPS O 1s signature, which is modeled by considering the core-level shifts for all oxygen atoms in the film. Throughout the oxidation series, the microscopy results reveal a layer-by-layer (Frank-van der Merwe) growth.

AB - The initial oxidation of Fe(100) at 400 °C has been studied by X-ray photoelectron spectroscopy (XPS), scanning tunneling microscopy (STM), and low-energy electron diffraction, in combination with density functional theory calculations. The first observed well-ordered surface oxide is formed at a coverage of ∼3 oxygen atoms per unreconstructed surface Fe(100) atom. STM shows that this surface oxide is terminated by straight atomic rows exhibiting a p(2 × 1) periodicity. However, already for oxide films with a coverage of ∼4 oxygen atoms (corresponding to one Fe3O4 unit cell thickness), wiggly atomic rows appear similar to the c(2 × 2) reconstructed Fe3O4(100)-surface with the Fe3O4 unit vectors rotated 45° to Fe(100). The wiggly rows are a consequence of subsurface cation iron vacancies, which previously have been observed for bulk surfaces. The formation of subsurface vacancies is supported by the XPS O 1s signature, which is modeled by considering the core-level shifts for all oxygen atoms in the film. Throughout the oxidation series, the microscopy results reveal a layer-by-layer (Frank-van der Merwe) growth.

UR - http://www.scopus.com/inward/record.url?scp=85070253694&partnerID=8YFLogxK

U2 - 10.1021/acs.jpcc.9b04625

DO - 10.1021/acs.jpcc.9b04625

M3 - Article

AN - SCOPUS:85070253694

VL - 123

SP - 16317

EP - 16325

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

SN - 1932-7447

IS - 26

ER -

ID: 36258618