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New pressure-induce...
New pressure-induced phase in tetragonal two-dimensional polymeric C60
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- Meletov, K. P. (författare)
- Physics Division, School of Technology, Aristotle University of Thessaloniki
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- Arvantidis, J. (författare)
- Physics Division, School of Technology, Aristotle University of Thessaloniki
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- Tsilika, E. (författare)
- Physics Division, School of Technology, Aristotle University of Thessaloniki
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- Assimopoulus, S. (författare)
- Physics Division, School of Technology, Aristotle University of Thessaloniki
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- Kourouklis, G.A. (författare)
- Physics Division, School of Technology, Aristotle University of Thessaloniki
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- Ves, S. (författare)
- Physics Department, Aristotle University of Thessaloniki
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Soldatov, Alexander (författare)
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- Prassides, K. (författare)
- School of Chemistry, Physics and Environmental Science, University of Sussex, Brighton
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(creator_code:org_t)
- 2001
- 2001
- Engelska.
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Ingår i: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 63:5, s. 54106-
- Relaterad länk:
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https://ltu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The behavior of the phonon modes of the tetragonal phase of the two-dimensional polymerized C60 has been studied as a function of pressure, up to 27.5 GPa, at room temperature by means of Raman spectroscopy. Gradual transformation of the material to a new phase was observed in the pressure region 19.0–21.0 GPa. As a result of this phase transformation dramatic changes in the Raman spectrum have been recorded. Namely, the total number of bands was reduced and a number of very strong peaks appeared. The Raman spectrum characteristics provide strong indication that the fullerene molecular cage is retained and therefore the high-pressure phase may be related to a three-dimensionally polymerized C60 phase. The high-pressure phase remains stable upon pressure decrease from 27.5 down to 9 GPa. Further release of pressure leads to the destruction of this high-pressure phase to a highly disordered structure whose broad features in the Raman spectrum resemble those of amorphous carbon.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Nyckelord
- Fysik
- Fysik
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