Electronic and magnetic properties of carbon nanofoam produced by high-repetition-rate laser ablation

A. V. Rode; R. G. Elliman; E. G. Gamaly; A. I. Veinger; A. G. Christy; S. T. Hyde; B. Luther-Davies

doi:10.1016/S0169-4332(02)00433-6

Electronic and magnetic properties of carbon nanofoam produced by high-repetition-rate laser ablation

A. V. Rode^*, R. G. Elliman, E. G. Gamaly, A. I. Veinger, A. G. Christy, S. T. Hyde, B. Luther-Davies

^*Corresponding author for this work

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

52 Citations (Scopus)

Abstract

A new form of carbon material, a low-density cluster-assembled carbon nanofoam was produced by high-repetition-rate laser ablation of a glassy carbon target in an ambient non-reactive Ar atmosphere. The foam poses a unique combination of properties, such as one of the lowest solid density and high resistivity, similar to that of amorphous diamond-like films. Electron energy loss spectra demonstrate that the carbon foam has a significant, 35% in average, fraction of sp ³ -bonding. The measured density of spins in the foam, 8.8 × 10 ²⁰ g ^-1 , is one of the highest observed in tetrahedrally-bonded carbon. This density of spins corresponds to paramagnetic susceptibility of about 0.01 of that for transition metals, which is in a striking contrast to diamagnetic properties of all other known allotropes of carbon.

Original language	English
Pages (from-to)	644-649
Number of pages	6
Journal	Applied Surface Science
Volume	197-198
DOIs	https://doi.org/10.1016/S0169-4332(02)00433-6
Publication status	Published - 2002
Event	Cola 2001 - Tsukuba, Japan Duration: 1 Oct 2001 → 1 Oct 2001

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title = "Electronic and magnetic properties of carbon nanofoam produced by high-repetition-rate laser ablation",

abstract = " A new form of carbon material, a low-density cluster-assembled carbon nanofoam was produced by high-repetition-rate laser ablation of a glassy carbon target in an ambient non-reactive Ar atmosphere. The foam poses a unique combination of properties, such as one of the lowest solid density and high resistivity, similar to that of amorphous diamond-like films. Electron energy loss spectra demonstrate that the carbon foam has a significant, 35% in average, fraction of sp 3 -bonding. The measured density of spins in the foam, 8.8 × 10 20 g -1 , is one of the highest observed in tetrahedrally-bonded carbon. This density of spins corresponds to paramagnetic susceptibility of about 0.01 of that for transition metals, which is in a striking contrast to diamagnetic properties of all other known allotropes of carbon.",

keywords = "Carbon nanofoam, High-repetition-rate laser ablation, Properties of carbon",

author = "Rode, {A. V.} and Elliman, {R. G.} and Gamaly, {E. G.} and Veinger, {A. I.} and Christy, {A. G.} and Hyde, {S. T.} and B. Luther-Davies",

year = "2002",

doi = "10.1016/S0169-4332(02)00433-6",

language = "English",

volume = "197-198",

pages = "644--649",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

note = "Cola 2001 ; Conference date: 01-10-2001 Through 01-10-2001",

}

TY - JOUR

T1 - Electronic and magnetic properties of carbon nanofoam produced by high-repetition-rate laser ablation

AU - Rode, A. V.

AU - Elliman, R. G.

AU - Gamaly, E. G.

AU - Veinger, A. I.

AU - Christy, A. G.

AU - Hyde, S. T.

AU - Luther-Davies, B.

PY - 2002

Y1 - 2002

N2 - A new form of carbon material, a low-density cluster-assembled carbon nanofoam was produced by high-repetition-rate laser ablation of a glassy carbon target in an ambient non-reactive Ar atmosphere. The foam poses a unique combination of properties, such as one of the lowest solid density and high resistivity, similar to that of amorphous diamond-like films. Electron energy loss spectra demonstrate that the carbon foam has a significant, 35% in average, fraction of sp 3 -bonding. The measured density of spins in the foam, 8.8 × 10 20 g -1 , is one of the highest observed in tetrahedrally-bonded carbon. This density of spins corresponds to paramagnetic susceptibility of about 0.01 of that for transition metals, which is in a striking contrast to diamagnetic properties of all other known allotropes of carbon.

AB - A new form of carbon material, a low-density cluster-assembled carbon nanofoam was produced by high-repetition-rate laser ablation of a glassy carbon target in an ambient non-reactive Ar atmosphere. The foam poses a unique combination of properties, such as one of the lowest solid density and high resistivity, similar to that of amorphous diamond-like films. Electron energy loss spectra demonstrate that the carbon foam has a significant, 35% in average, fraction of sp 3 -bonding. The measured density of spins in the foam, 8.8 × 10 20 g -1 , is one of the highest observed in tetrahedrally-bonded carbon. This density of spins corresponds to paramagnetic susceptibility of about 0.01 of that for transition metals, which is in a striking contrast to diamagnetic properties of all other known allotropes of carbon.

KW - Carbon nanofoam

KW - High-repetition-rate laser ablation

KW - Properties of carbon

UR - http://www.scopus.com/inward/record.url?scp=0036419997&partnerID=8YFLogxK

U2 - 10.1016/S0169-4332(02)00433-6

DO - 10.1016/S0169-4332(02)00433-6

M3 - Conference article

SN - 0169-4332

VL - 197-198

SP - 644

EP - 649

JO - Applied Surface Science

JF - Applied Surface Science

T2 - Cola 2001

Y2 - 1 October 2001 through 1 October 2001

ER -

Electronic and magnetic properties of carbon nanofoam produced by high-repetition-rate laser ablation

Abstract

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