Diffusion during electron-beam-induced reduction of tungsten trioxide

S. R. Singh; L. D. Marks

doi:10.1080/09500838908206432

Diffusion during electron-beam-induced reduction of tungsten trioxide

S. R. Singh, L. D. Marks

CCSS - Center for Catalysis and Surface Science

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

20 Scopus citations

Abstract

We report experimental results on the kinetics of the electron-beam-induced reduction of W03 by in situ high-resolution electron microscopy. Electron-beam irradiation of WO₃results in complete reduction to W. The process is surface-initiated through desorption of oxygen from the crystal surface, and the subsequent growth of tungsten was found to be a diffusion-controlled process. The damage rate follows a para-linear curve, that is, an initially parabolic damage rate degenerating into a linear rate. The epitaxial relationship between WO₃and W was found to be (001)_WO3//(110)_w. The WO₃lattice has a critical nucleus size of about 2-6 nm.

Original language	English (US)
Pages (from-to)	31-36
Number of pages	6
Journal	Philosophical Magazine Letters
Volume	60
Issue number	1
DOIs	https://doi.org/10.1080/09500838908206432
State	Published - Jul 1989

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Condensed Matter Physics

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10.1080/09500838908206432

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title = "Diffusion during electron-beam-induced reduction of tungsten trioxide",

abstract = "We report experimental results on the kinetics of the electron-beam-induced reduction of W03 by in situ high-resolution electron microscopy. Electron-beam irradiation of WO3results in complete reduction to W. The process is surface-initiated through desorption of oxygen from the crystal surface, and the subsequent growth of tungsten was found to be a diffusion-controlled process. The damage rate follows a para-linear curve, that is, an initially parabolic damage rate degenerating into a linear rate. The epitaxial relationship between WO3and W was found to be (001)WO3//(110)w. The WO3lattice has a critical nucleus size of about 2-6 nm.",

author = "Singh, {S. R.} and Marks, {L. D.}",

note = "Funding Information: This work was supported by the Air Force Office of Scientific Research on grant number AFOSR-86-0344.",

year = "1989",

month = jul,

doi = "10.1080/09500838908206432",

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T1 - Diffusion during electron-beam-induced reduction of tungsten trioxide

AU - Singh, S. R.

AU - Marks, L. D.

N1 - Funding Information: This work was supported by the Air Force Office of Scientific Research on grant number AFOSR-86-0344.

PY - 1989/7

Y1 - 1989/7

N2 - We report experimental results on the kinetics of the electron-beam-induced reduction of W03 by in situ high-resolution electron microscopy. Electron-beam irradiation of WO3results in complete reduction to W. The process is surface-initiated through desorption of oxygen from the crystal surface, and the subsequent growth of tungsten was found to be a diffusion-controlled process. The damage rate follows a para-linear curve, that is, an initially parabolic damage rate degenerating into a linear rate. The epitaxial relationship between WO3and W was found to be (001)WO3//(110)w. The WO3lattice has a critical nucleus size of about 2-6 nm.

AB - We report experimental results on the kinetics of the electron-beam-induced reduction of W03 by in situ high-resolution electron microscopy. Electron-beam irradiation of WO3results in complete reduction to W. The process is surface-initiated through desorption of oxygen from the crystal surface, and the subsequent growth of tungsten was found to be a diffusion-controlled process. The damage rate follows a para-linear curve, that is, an initially parabolic damage rate degenerating into a linear rate. The epitaxial relationship between WO3and W was found to be (001)WO3//(110)w. The WO3lattice has a critical nucleus size of about 2-6 nm.

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Diffusion during electron-beam-induced reduction of tungsten trioxide

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