Synthesis and oxidation of CeN film: An in situ investigation by electron spectroscopies

Wende Xiao; Qinlin Guo; E. G. Wang

doi:10.1021/jp0447441

Synthesis and oxidation of CeN film: An in situ investigation by electron spectroscopies

Wende Xiao
, Qinlin Guo^*
, E. G. Wang

^*Corresponding author for this work

CAS - Institute of Physics
National University of Singapore

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

11 Citations (Scopus)

Abstract

Nearly stoichiometric CeN film is synthesized on a Re(0001) substrate in an ultrahigh vacuum system involving highly active N atoms in the growth process, generated by thermal decomposition of NH ₃ by use of a hot tungsten filament. The electronic structure of the CeN film as prepared is equivalent to that of a single crystal observed by in situ Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS). AES and XPS investigations show that CeN film is directly oxidized to CeO ₂ after exposure to O ₂ at room temperature. However, CeN changes into Ce ₂O ₃ after annealing in ∼10 ^-6 mbar of O ₂ atmosphere at elevated temperature.

Original language	English
Pages (from-to)	4953-4958
Number of pages	6
Journal	Journal of Physical Chemistry B
Volume	109
Issue number	11
DOIs	https://doi.org/10.1021/jp0447441
Publication status	Published - 24 Mar 2005
Externally published	Yes

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title = "Synthesis and oxidation of CeN film: An in situ investigation by electron spectroscopies",

abstract = "Nearly stoichiometric CeN film is synthesized on a Re(0001) substrate in an ultrahigh vacuum system involving highly active N atoms in the growth process, generated by thermal decomposition of NH 3 by use of a hot tungsten filament. The electronic structure of the CeN film as prepared is equivalent to that of a single crystal observed by in situ Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS). AES and XPS investigations show that CeN film is directly oxidized to CeO 2 after exposure to O 2 at room temperature. However, CeN changes into Ce 2O 3 after annealing in ∼10 -6 mbar of O 2 atmosphere at elevated temperature.",

author = "Wende Xiao and Qinlin Guo and Wang, \{E. G.\}",

year = "2005",

month = mar,

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doi = "10.1021/jp0447441",

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T1 - Synthesis and oxidation of CeN film

T2 - An in situ investigation by electron spectroscopies

AU - Xiao, Wende

AU - Guo, Qinlin

AU - Wang, E. G.

PY - 2005/3/24

Y1 - 2005/3/24

N2 - Nearly stoichiometric CeN film is synthesized on a Re(0001) substrate in an ultrahigh vacuum system involving highly active N atoms in the growth process, generated by thermal decomposition of NH 3 by use of a hot tungsten filament. The electronic structure of the CeN film as prepared is equivalent to that of a single crystal observed by in situ Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS). AES and XPS investigations show that CeN film is directly oxidized to CeO 2 after exposure to O 2 at room temperature. However, CeN changes into Ce 2O 3 after annealing in ∼10 -6 mbar of O 2 atmosphere at elevated temperature.

AB - Nearly stoichiometric CeN film is synthesized on a Re(0001) substrate in an ultrahigh vacuum system involving highly active N atoms in the growth process, generated by thermal decomposition of NH 3 by use of a hot tungsten filament. The electronic structure of the CeN film as prepared is equivalent to that of a single crystal observed by in situ Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS). AES and XPS investigations show that CeN film is directly oxidized to CeO 2 after exposure to O 2 at room temperature. However, CeN changes into Ce 2O 3 after annealing in ∼10 -6 mbar of O 2 atmosphere at elevated temperature.

UR - https://www.scopus.com/pages/publications/15744380568

U2 - 10.1021/jp0447441

DO - 10.1021/jp0447441

M3 - Article

AN - SCOPUS:15744380568

SN - 1520-6106

VL - 109

SP - 4953

EP - 4958

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 11

ER -

Synthesis and oxidation of CeN film: An in situ investigation by electron spectroscopies

Abstract

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