Electron beam irradiation-induced reduction of Sn on epitaxial rutile SnxTi1-xO2 alloy thin films

Yutaro Komuro; Hiroshi Kumigashira; Masaharu Oshima; Yuji Matsumoto

doi:10.1016/j.tsf.2010.11.048

Electron beam irradiation-induced reduction of Sn on epitaxial rutile Sn_xTi_1-xO₂ alloy thin films

Yutaro Komuro, Hiroshi Kumigashira, Masaharu Oshima, Yuji Matsumoto

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

2 Citations (Scopus)

Abstract

Epitaxially-grown Sn_xTi_{1 - x}O₂ alloy thin films with different compositions were fabricated by successive deposition of SnO₂ on ultra-smooth Nb-doped TiO₂ (rutile) (110) substrates. The surface Sn atoms of the Sn_xTi_{1 - x}O ₂, which took a tetravalent state just after the deposition under the present condition, were reduced into a metallic state by electron beam irradiation, but not for a pure SnO₂ film. The reduction process approximately obeys zero-order kinetics; the reaction rate constant linearly increases with an increase of the surface composition of Ti. Based on these results, the reduction mechanism is discussed.

Original language	English
Pages (from-to)	2555-2558
Number of pages	4
Journal	Thin Solid Films
Volume	519
Issue number	8
DOIs	https://doi.org/10.1016/j.tsf.2010.11.048
Publication status	Published - 2011 Feb 1
Externally published	Yes

Keywords

Alloys
Auger electron spectroscopy
Thin film
Tin oxides
Titanium oxide

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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title = "Electron beam irradiation-induced reduction of Sn on epitaxial rutile SnxTi1-xO2 alloy thin films",

abstract = "Epitaxially-grown SnxTi1 - xO2 alloy thin films with different compositions were fabricated by successive deposition of SnO2 on ultra-smooth Nb-doped TiO2 (rutile) (110) substrates. The surface Sn atoms of the SnxTi1 - xO 2, which took a tetravalent state just after the deposition under the present condition, were reduced into a metallic state by electron beam irradiation, but not for a pure SnO2 film. The reduction process approximately obeys zero-order kinetics; the reaction rate constant linearly increases with an increase of the surface composition of Ti. Based on these results, the reduction mechanism is discussed.",

keywords = "Alloys, Auger electron spectroscopy, Thin film, Tin oxides, Titanium oxide",

author = "Yutaro Komuro and Hiroshi Kumigashira and Masaharu Oshima and Yuji Matsumoto",

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T1 - Electron beam irradiation-induced reduction of Sn on epitaxial rutile SnxTi1-xO2 alloy thin films

AU - Komuro, Yutaro

AU - Kumigashira, Hiroshi

AU - Oshima, Masaharu

AU - Matsumoto, Yuji

PY - 2011/2/1

Y1 - 2011/2/1

N2 - Epitaxially-grown SnxTi1 - xO2 alloy thin films with different compositions were fabricated by successive deposition of SnO2 on ultra-smooth Nb-doped TiO2 (rutile) (110) substrates. The surface Sn atoms of the SnxTi1 - xO 2, which took a tetravalent state just after the deposition under the present condition, were reduced into a metallic state by electron beam irradiation, but not for a pure SnO2 film. The reduction process approximately obeys zero-order kinetics; the reaction rate constant linearly increases with an increase of the surface composition of Ti. Based on these results, the reduction mechanism is discussed.

AB - Epitaxially-grown SnxTi1 - xO2 alloy thin films with different compositions were fabricated by successive deposition of SnO2 on ultra-smooth Nb-doped TiO2 (rutile) (110) substrates. The surface Sn atoms of the SnxTi1 - xO 2, which took a tetravalent state just after the deposition under the present condition, were reduced into a metallic state by electron beam irradiation, but not for a pure SnO2 film. The reduction process approximately obeys zero-order kinetics; the reaction rate constant linearly increases with an increase of the surface composition of Ti. Based on these results, the reduction mechanism is discussed.

KW - Alloys

KW - Auger electron spectroscopy

KW - Thin film

KW - Tin oxides

KW - Titanium oxide

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