Improved resolution in HREELS using maximum-entropy deconvolution: CO on PtxNi1−x(111)

W. von der Linden; V. Dose; R. Matzdorf; A. Pantförder; G. Meister; A. Goldmann

doi:10.1016/S0368-2048(96)03066-6

Improved resolution in HREELS using maximum-entropy deconvolution: CO on PtxNi1−x(111)

W. von der Linden, V. Dose, R. Matzdorf, A. Pantförder, G. Meister, A. Goldmann

Publikation: Beitrag in einer Fachzeitschrift › Artikel › Begutachtung

Abstract

High-resolution electron energy loss spectroscopy (HREELS) has been used to study stretch vibrations of CO chemisorbed at low coverage on PtxNi1−x(111). Bayesian probability theory along with the entropic prior (Maxent) has been employed to deconvolve the apparatus function and to improve the apparent energy resolution. Maxent has proven very successful in a wide range of inversion problems. Here the resolution enhancement enables the positions of CO on the PtNi surface to be identified. It appears that CO is predominantly on top of Ni with the Ni atoms coordinated threefold laterally and with Ni in linear chains or on top of Pt. Furthermore, the ratio of the Pt to the Ni peak is used to study the dependence of the Pt concentration in the first layer on the annealing temperature.

Originalsprache	englisch
Seiten (von - bis)	1-7
Seitenumfang	7
Fachzeitschrift	Journal of Electron Spectroscopy and Related Phenomena
Jahrgang	83
Ausgabenummer	1
DOIs	https://doi.org/10.1016/S0368-2048(96)03066-6
Publikationsstatus	Veröffentlicht - 1 Jan. 1997

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10.1016/S0368-2048(96)03066-6

http://www.sciencedirect.com/science/article/pii/S0368204896030666

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title = "Improved resolution in HREELS using maximum-entropy deconvolution: CO on PtxNi1−x(111)",

abstract = "High-resolution electron energy loss spectroscopy (HREELS) has been used to study stretch vibrations of CO chemisorbed at low coverage on PtxNi1−x(111). Bayesian probability theory along with the entropic prior (Maxent) has been employed to deconvolve the apparatus function and to improve the apparent energy resolution. Maxent has proven very successful in a wide range of inversion problems. Here the resolution enhancement enables the positions of CO on the PtNi surface to be identified. It appears that CO is predominantly on top of Ni with the Ni atoms coordinated threefold laterally and with Ni in linear chains or on top of Pt. Furthermore, the ratio of the Pt to the Ni peak is used to study the dependence of the Pt concentration in the first layer on the annealing temperature.",

keywords = "CO chemisorption, High-resolution electron energy loss spectroscopy, Maximum entropy deconvolution, PtNi single crystals",

author = "{von der Linden}, W. and V. Dose and R. Matzdorf and A. Pantf{\"o}rder and G. Meister and A. Goldmann",

year = "1997",

month = jan,

day = "1",

doi = "10.1016/S0368-2048(96)03066-6",

language = "English",

volume = "83",

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TY - JOUR

T1 - Improved resolution in HREELS using maximum-entropy deconvolution: CO on PtxNi1−x(111)

AU - von der Linden, W.

AU - Dose, V.

AU - Matzdorf, R.

AU - Pantförder, A.

AU - Meister, G.

AU - Goldmann, A.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - High-resolution electron energy loss spectroscopy (HREELS) has been used to study stretch vibrations of CO chemisorbed at low coverage on PtxNi1−x(111). Bayesian probability theory along with the entropic prior (Maxent) has been employed to deconvolve the apparatus function and to improve the apparent energy resolution. Maxent has proven very successful in a wide range of inversion problems. Here the resolution enhancement enables the positions of CO on the PtNi surface to be identified. It appears that CO is predominantly on top of Ni with the Ni atoms coordinated threefold laterally and with Ni in linear chains or on top of Pt. Furthermore, the ratio of the Pt to the Ni peak is used to study the dependence of the Pt concentration in the first layer on the annealing temperature.

AB - High-resolution electron energy loss spectroscopy (HREELS) has been used to study stretch vibrations of CO chemisorbed at low coverage on PtxNi1−x(111). Bayesian probability theory along with the entropic prior (Maxent) has been employed to deconvolve the apparatus function and to improve the apparent energy resolution. Maxent has proven very successful in a wide range of inversion problems. Here the resolution enhancement enables the positions of CO on the PtNi surface to be identified. It appears that CO is predominantly on top of Ni with the Ni atoms coordinated threefold laterally and with Ni in linear chains or on top of Pt. Furthermore, the ratio of the Pt to the Ni peak is used to study the dependence of the Pt concentration in the first layer on the annealing temperature.

KW - CO chemisorption, High-resolution electron energy loss spectroscopy, Maximum entropy deconvolution, PtNi single crystals

U2 - 10.1016/S0368-2048(96)03066-6

DO - 10.1016/S0368-2048(96)03066-6

M3 - Article

SN - 0368-2048

VL - 83

SP - 1

EP - 7

JO - Journal of Electron Spectroscopy and Related Phenomena

JF - Journal of Electron Spectroscopy and Related Phenomena

IS - 1

ER -

Improved resolution in HREELS using maximum-entropy deconvolution: CO on PtxNi1−x(111)

Abstract

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