Carbon monolayer phase condensation on Ni(111)

M. Eizenberg; J. M. Blakely

doi:10.1016/0039-6028(79)90330-3

Carbon monolayer phase condensation on Ni(111)

M. Eizenberg^*, J. M. Blakely

^*Corresponding author for this work

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

453 Scopus citations

Abstract

A condensed monolayer of carbon on the (111) surface of C-doped nickel single crystals has been observed at different bulk doping levels in the range of 10^-1 to 1 at%. This phase persists over a range of temperatures of more than 100 K; it is bounded at high temperatures by the formation of a dilute carbon phase at T_S and at a lower temperature, T_P, by the formation of a thick graphite precipitate. The ratio T_S T_P is about 1.11 at all doping levels investigated. The dependence of the precipitation and the phase transition temperatures on the bulk doping level allow the binding energy per carbon atom in the monolayer phase relative to that in the bulk solution to be determined; it is approximately 10% greater than for bulk graphite with a value of 0.55 eV. The partial atomic entropy in the monolayer phase was also determined; it is about 0.03 k greater than for bulk graphite.

Original language	English
Pages (from-to)	228-236
Number of pages	9
Journal	Surface Science
Volume	82
Issue number	1
DOIs	https://doi.org/10.1016/0039-6028(79)90330-3
State	Published - 2 Mar 1979
Externally published	Yes

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title = "Carbon monolayer phase condensation on Ni(111)",

abstract = "A condensed monolayer of carbon on the (111) surface of C-doped nickel single crystals has been observed at different bulk doping levels in the range of 10-1 to 1 at%. This phase persists over a range of temperatures of more than 100 K; it is bounded at high temperatures by the formation of a dilute carbon phase at TS and at a lower temperature, TP, by the formation of a thick graphite precipitate. The ratio TS TP is about 1.11 at all doping levels investigated. The dependence of the precipitation and the phase transition temperatures on the bulk doping level allow the binding energy per carbon atom in the monolayer phase relative to that in the bulk solution to be determined; it is approximately 10% greater than for bulk graphite with a value of 0.55 eV. The partial atomic entropy in the monolayer phase was also determined; it is about 0.03 k greater than for bulk graphite.",

author = "M. Eizenberg and Blakely, {J. M.}",

note = "Funding Information: The work was supported by the National Science Foundation (Grant No. 76-23537) and by the Materials Science Center at Cornell University.",

year = "1979",

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doi = "10.1016/0039-6028(79)90330-3",

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T1 - Carbon monolayer phase condensation on Ni(111)

AU - Eizenberg, M.

AU - Blakely, J. M.

N1 - Funding Information: The work was supported by the National Science Foundation (Grant No. 76-23537) and by the Materials Science Center at Cornell University.

PY - 1979/3/2

Y1 - 1979/3/2

N2 - A condensed monolayer of carbon on the (111) surface of C-doped nickel single crystals has been observed at different bulk doping levels in the range of 10-1 to 1 at%. This phase persists over a range of temperatures of more than 100 K; it is bounded at high temperatures by the formation of a dilute carbon phase at TS and at a lower temperature, TP, by the formation of a thick graphite precipitate. The ratio TS TP is about 1.11 at all doping levels investigated. The dependence of the precipitation and the phase transition temperatures on the bulk doping level allow the binding energy per carbon atom in the monolayer phase relative to that in the bulk solution to be determined; it is approximately 10% greater than for bulk graphite with a value of 0.55 eV. The partial atomic entropy in the monolayer phase was also determined; it is about 0.03 k greater than for bulk graphite.

AB - A condensed monolayer of carbon on the (111) surface of C-doped nickel single crystals has been observed at different bulk doping levels in the range of 10-1 to 1 at%. This phase persists over a range of temperatures of more than 100 K; it is bounded at high temperatures by the formation of a dilute carbon phase at TS and at a lower temperature, TP, by the formation of a thick graphite precipitate. The ratio TS TP is about 1.11 at all doping levels investigated. The dependence of the precipitation and the phase transition temperatures on the bulk doping level allow the binding energy per carbon atom in the monolayer phase relative to that in the bulk solution to be determined; it is approximately 10% greater than for bulk graphite with a value of 0.55 eV. The partial atomic entropy in the monolayer phase was also determined; it is about 0.03 k greater than for bulk graphite.

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U2 - 10.1016/0039-6028(79)90330-3

DO - 10.1016/0039-6028(79)90330-3

M3 - 文章

AN - SCOPUS:0000834908

SN - 0039-6028

VL - 82

SP - 228

EP - 236

JO - Surface Science

JF - Surface Science

IS - 1

ER -

Carbon monolayer phase condensation on Ni(111)

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