Anomalous ESR behavior of carbon nanofilaments grown from palladium seeds

Y. Breton; M. Verstraete; R. Fleurier; T. Cacciaguerra; J. C. Charlier; A. L. Thomann; J. P. Salvetat

doi:10.1016/j.carbon.2003.12.011

Anomalous ESR behavior of carbon nanofilaments grown from palladium seeds

Y. Breton, M. Verstraete, R. Fleurier, T. Cacciaguerra, J. C. Charlier, A. L. Thomann, J. P. Salvetat^*

^*Corresponding author for this work

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

Abstract

We report on the anomalous spin relaxation behavior of conduction electrons in carbon nanofilaments produced by decomposition of acetylene on Pd nanoparticles. Thanks to first-principle calculations, we found that adsorption of Pd above the center of a hexagon in the carbon lattice is energetically favorable, and that π-d orbital interactions probably lead to an efficient spin relaxation mechanism involving spin-orbit coupling. Incorporation of Pd impurities during carbon growth implies that nanofilament length depends on initial particle size, as actually observed.

Original language	English
Pages (from-to)	1049-1052
Number of pages	4
Journal	Carbon
Volume	42
Issue number	5-6
DOIs	https://doi.org/10.1016/j.carbon.2003.12.011
Publication status	Published - 2004
Externally published	Yes
Event	European Materials Research Society 2003 - Strasbourg, France Duration: 10 Jun 2003 → 13 Jun 2003

Keywords

A. Carbon nanotube, Catalytically grown carbon
C. Electron paramagnetic resonance
D. Electronic structure

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10.1016/j.carbon.2003.12.011

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title = "Anomalous ESR behavior of carbon nanofilaments grown from palladium seeds",

abstract = "We report on the anomalous spin relaxation behavior of conduction electrons in carbon nanofilaments produced by decomposition of acetylene on Pd nanoparticles. Thanks to first-principle calculations, we found that adsorption of Pd above the center of a hexagon in the carbon lattice is energetically favorable, and that π-d orbital interactions probably lead to an efficient spin relaxation mechanism involving spin-orbit coupling. Incorporation of Pd impurities during carbon growth implies that nanofilament length depends on initial particle size, as actually observed.",

keywords = "A. Carbon nanotube, Catalytically grown carbon, C. Electron paramagnetic resonance, D. Electronic structure",

author = "Y. Breton and M. Verstraete and R. Fleurier and T. Cacciaguerra and Charlier, {J. C.} and Thomann, {A. L.} and Salvetat, {J. P.}",

year = "2004",

doi = "10.1016/j.carbon.2003.12.011",

language = "English",

volume = "42",

pages = "1049--1052",

journal = "Carbon",

issn = "0008-6223",

publisher = "Elsevier Ltd",

number = "5-6",

note = "European Materials Research Society 2003 ; Conference date: 10-06-2003 Through 13-06-2003",

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TY - JOUR

T1 - Anomalous ESR behavior of carbon nanofilaments grown from palladium seeds

AU - Breton, Y.

AU - Verstraete, M.

AU - Fleurier, R.

AU - Cacciaguerra, T.

AU - Charlier, J. C.

AU - Thomann, A. L.

AU - Salvetat, J. P.

PY - 2004

Y1 - 2004

N2 - We report on the anomalous spin relaxation behavior of conduction electrons in carbon nanofilaments produced by decomposition of acetylene on Pd nanoparticles. Thanks to first-principle calculations, we found that adsorption of Pd above the center of a hexagon in the carbon lattice is energetically favorable, and that π-d orbital interactions probably lead to an efficient spin relaxation mechanism involving spin-orbit coupling. Incorporation of Pd impurities during carbon growth implies that nanofilament length depends on initial particle size, as actually observed.

AB - We report on the anomalous spin relaxation behavior of conduction electrons in carbon nanofilaments produced by decomposition of acetylene on Pd nanoparticles. Thanks to first-principle calculations, we found that adsorption of Pd above the center of a hexagon in the carbon lattice is energetically favorable, and that π-d orbital interactions probably lead to an efficient spin relaxation mechanism involving spin-orbit coupling. Incorporation of Pd impurities during carbon growth implies that nanofilament length depends on initial particle size, as actually observed.

KW - A. Carbon nanotube, Catalytically grown carbon

KW - C. Electron paramagnetic resonance

KW - D. Electronic structure

UR - http://www.scopus.com/inward/record.url?scp=2342545573&partnerID=8YFLogxK

U2 - 10.1016/j.carbon.2003.12.011

DO - 10.1016/j.carbon.2003.12.011

M3 - Conference article

AN - SCOPUS:2342545573

SN - 0008-6223

VL - 42

SP - 1049

EP - 1052

JO - Carbon

JF - Carbon

IS - 5-6

T2 - European Materials Research Society 2003

Y2 - 10 June 2003 through 13 June 2003

ER -

Anomalous ESR behavior of carbon nanofilaments grown from palladium seeds

Abstract

Keywords

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