High-pressure synthesis of superhard material from C60

Takashi Horikawa; Kaichi Suito; Michihiro Kobayashi; Ryuichiro Oshima

doi:10.1143/JJAP.44.3141

High-pressure synthesis of superhard material from C₆₀

Takashi Horikawa, Kaichi Suito, Michihiro Kobayashi, Ryuichiro Oshima

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

7 Citations (Scopus)

Abstract

Fullerene, C₆₀, has been investigated at a high pressure of 15 GPa and at a high temperature of 800°C using an octahedral anvil press. Samples retrieved after being heated to temperatures between 165 and 700°C under pressures from 10 to 15 GPa were found to be very hard, exhibiting micro-Vickers hardness ranging from 40 to 100 GPa. The hardness was governed by the pressure and temperature conditions studied as well as the duration of the high-temperature treatment. X-ray diffraction analysis and Raman scattering studies revealed that the hard products contained amorphous carbon consisting of sp²-bonded clusters with a small persistence of unknown phase.

Original language	English
Pages (from-to)	3141-3146
Number of pages	6
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	44
Issue number	5 A
DOIs	https://doi.org/10.1143/JJAP.44.3141
Publication status	Published - 2005 May
Externally published	Yes

Keywords

Fullerene
Hardness
High pressure
High temperature
X-ray diffraction

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.44.3141

Cite this

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abstract = "Fullerene, C60, has been investigated at a high pressure of 15 GPa and at a high temperature of 800°C using an octahedral anvil press. Samples retrieved after being heated to temperatures between 165 and 700°C under pressures from 10 to 15 GPa were found to be very hard, exhibiting micro-Vickers hardness ranging from 40 to 100 GPa. The hardness was governed by the pressure and temperature conditions studied as well as the duration of the high-temperature treatment. X-ray diffraction analysis and Raman scattering studies revealed that the hard products contained amorphous carbon consisting of sp2-bonded clusters with a small persistence of unknown phase.",

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T1 - High-pressure synthesis of superhard material from C60

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AU - Suito, Kaichi

AU - Kobayashi, Michihiro

AU - Oshima, Ryuichiro

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AB - Fullerene, C60, has been investigated at a high pressure of 15 GPa and at a high temperature of 800°C using an octahedral anvil press. Samples retrieved after being heated to temperatures between 165 and 700°C under pressures from 10 to 15 GPa were found to be very hard, exhibiting micro-Vickers hardness ranging from 40 to 100 GPa. The hardness was governed by the pressure and temperature conditions studied as well as the duration of the high-temperature treatment. X-ray diffraction analysis and Raman scattering studies revealed that the hard products contained amorphous carbon consisting of sp2-bonded clusters with a small persistence of unknown phase.

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KW - Hardness

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KW - High temperature

KW - X-ray diffraction

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