Ion-beam modification of fullerene

Prawer S., Nugent K.W., Biggs S., McCulloch D.G., Leong W.H., Hoffman A. and Kalish R. (1995) Ion-beam modification of fullerene. Physical Review B, 52 2: 841-849. doi:10.1103/PhysRevB.52.841

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Author Prawer S.
Nugent K.W.
Biggs S.
McCulloch D.G.
Leong W.H.
Hoffman A.
Kalish R.
Title Ion-beam modification of fullerene
Journal name Physical Review B   Check publisher's open access policy
ISSN 0163-1829
Publication date 1995
Sub-type Article (original research)
DOI 10.1103/PhysRevB.52.841
Open Access Status File (Publisher version)
Volume 52
Issue 2
Start page 841
End page 849
Total pages 9
Language eng
Subject 3104 Condensed Matter Physics
Abstract The response of thin films of fullerene (C60) to energetic ion impact is investigated. The diagnostics employed include Fourier-transform infrared and Raman spectroscopies, cross-sectional transmission electron microscopy, and atomic force microscopy. By combining the information obtained from these diagnostics with that from the dependence of the conductivity on ion dose, it is concluded that each C60 molecule completely disintegrates when hit by an energetic ion. The cross section for the destruction is about 6×10-13 cm2 for irradiation with 620-keV Xe ions. The disintegration occurs when C atoms are knocked out of the molecule either directly by the impinging ion or by an energetic knock-on C atom within the damage cascade. This process is quite different from the Coulomb-explosion mechanism previously proposed in the literature. For very low ion doses (<1×1011 Xe/cm2) most of the C60 molecules remain intact; however this dose is sufficient to completely disrupt the ordering of the C60 molecules in the van der Waals bonded C60 solid. Disruption of the lattice ordering at such low doses is considered to be attributable to the weakness of the van der Waals forces which bind the C60 clusters together into the molecular solid.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
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