XPS characterization of xα-Fe2O3-(1 - x)ZrO2 for oxygen gas sensing application

W. Cao; O. K. Tan; J. S. Pan; W. Zhu; C. V. Gopal Reddy

doi:10.1016/S0254-0584(02)00032-9

XPS characterization of xα-Fe₂O₃-(1 - x)ZrO₂ for oxygen gas sensing application

W. Cao, O. K. Tan^*, J. S. Pan, W. Zhu, C. V. Gopal Reddy

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

50 Citations (Scopus)

Abstract

XPS characterization was carried out for the solid-solution xα-Fe₂O₃-(1 - x)ZrO₂ which is a potential low temperature oxygen gas sensing material. The significant variation of relative intensity of the two peaks in O 1s spectra provides us a unique way to estimate the oxygen vacancy concentrations of xα-Fe₂O₃-(1 - x)ZrO₂ with x ranging from 0 to 0.3. The estimation result from XPS coincides with the calculated values from the substitutional model. The relationship between the sensitivity of the fabricated oxygen gas sensor and the oxygen vacancy concentration in the sensing material was established.

Original language	English
Pages (from-to)	67-70
Number of pages	4
Journal	Materials Chemistry and Physics
Volume	75
Issue number	1-3
DOIs	https://doi.org/10.1016/S0254-0584(02)00032-9
Publication status	Published - Apr 28 2002
Externally published	Yes
Event	ICMAT 2001 Symposium C (Novel and Advanced Ceramics) - Singapore, Singapore Duration: Apr 28 2002 → …

ASJC Scopus Subject Areas

General Materials Science
Condensed Matter Physics

Keywords

Oxygen gas sensor
Oxygen vacancy
XPS

Access to Document

10.1016/S0254-0584(02)00032-9

Cite this

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title = "XPS characterization of xα-Fe2O3-(1 - x)ZrO2 for oxygen gas sensing application",

abstract = "XPS characterization was carried out for the solid-solution xα-Fe2O3-(1 - x)ZrO2 which is a potential low temperature oxygen gas sensing material. The significant variation of relative intensity of the two peaks in O 1s spectra provides us a unique way to estimate the oxygen vacancy concentrations of xα-Fe2O3-(1 - x)ZrO2 with x ranging from 0 to 0.3. The estimation result from XPS coincides with the calculated values from the substitutional model. The relationship between the sensitivity of the fabricated oxygen gas sensor and the oxygen vacancy concentration in the sensing material was established.",

keywords = "Oxygen gas sensor, Oxygen vacancy, XPS",

author = "W. Cao and Tan, {O. K.} and Pan, {J. S.} and W. Zhu and {Gopal Reddy}, {C. V.}",

year = "2002",

month = apr,

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doi = "10.1016/S0254-0584(02)00032-9",

language = "English",

volume = "75",

pages = "67--70",

journal = "Materials Chemistry and Physics",

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TY - JOUR

T1 - XPS characterization of xα-Fe2O3-(1 - x)ZrO2 for oxygen gas sensing application

AU - Cao, W.

AU - Tan, O. K.

AU - Pan, J. S.

AU - Zhu, W.

AU - Gopal Reddy, C. V.

PY - 2002/4/28

Y1 - 2002/4/28

N2 - XPS characterization was carried out for the solid-solution xα-Fe2O3-(1 - x)ZrO2 which is a potential low temperature oxygen gas sensing material. The significant variation of relative intensity of the two peaks in O 1s spectra provides us a unique way to estimate the oxygen vacancy concentrations of xα-Fe2O3-(1 - x)ZrO2 with x ranging from 0 to 0.3. The estimation result from XPS coincides with the calculated values from the substitutional model. The relationship between the sensitivity of the fabricated oxygen gas sensor and the oxygen vacancy concentration in the sensing material was established.

AB - XPS characterization was carried out for the solid-solution xα-Fe2O3-(1 - x)ZrO2 which is a potential low temperature oxygen gas sensing material. The significant variation of relative intensity of the two peaks in O 1s spectra provides us a unique way to estimate the oxygen vacancy concentrations of xα-Fe2O3-(1 - x)ZrO2 with x ranging from 0 to 0.3. The estimation result from XPS coincides with the calculated values from the substitutional model. The relationship between the sensitivity of the fabricated oxygen gas sensor and the oxygen vacancy concentration in the sensing material was established.

KW - Oxygen gas sensor

KW - Oxygen vacancy

KW - XPS

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