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Pressure-induced ph...
Pressure-induced phase in tetragonal two-dimensional polymericC60
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- Meletov, Kosmas P. (author)
- Physics Division, School of Technology, Aristotle University of Thessaloniki, Thessaloniki, Greece; Institute of Solid State Physics RAS, Chernogolovka, Moscow region, Russia
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- Arvanitidis, J. (author)
- Physics Department, Aristotle University of Thessaloniki, Thessaloniki, Greece
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- Tsilika, E. (author)
- Physics Division, School of Technology, Aristotle University of Thessaloniki, Thessaloniki, Greece
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- Assimopoulos, S. (author)
- Physics Division, School of Technology, Aristotle University of Thessaloniki, Thessaloniki, Greece
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- Kourouklis, G. A. (author)
- Physics Division, School of Technology, Aristotle University of Thessaloniki, Thessaloniki, Greece
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- Ves, S. (author)
- Physics Department, Aristotle University of Thessaloniki, Thessaloniki, Greece
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- Soldatov, Alexander (author)
- Umeå universitet,Institutionen för fysik,School of Chemistry, Physics and Environmental Science, University of Sussex, Brighton, United Kingdom
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- Prassides, Kosmas (author)
- School of Chemistry, Physics and Environmental Science, University of Sussex, Brighton, United Kingdom
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(creator_code:org_t)
- 2001-01-10
- 2001
- English.
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In: Physical Review B Condensed Matter. - : American Physical Society. - 0163-1829 .- 1095-3795. ; 63:5
- Related links:
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Abstract
Subject headings
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- 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- High pressure
- Raman spectroscopy
- fullerenes
- tetragonal C60
- phase transformation
Publication and Content Type
- ref (subject category)
- art (subject category)
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