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High-pressure synth...
High-pressure synthesis, structural and Raman studies of a two-dimensional polymer crystal of C60.
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Moret, Roger (författare)
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Launois, Pascale (författare)
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- Wågberg, Thomas (författare)
- Umeå universitet,Institutionen för fysik
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- Sundqvist, Bertil (författare)
- Umeå universitet,Institutionen för fysik
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(creator_code:org_t)
- Springer, 2000
- 2000
- Engelska.
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Ingår i: European Physical Journal B. - : Springer. - 1434-6028 .- 1434-6036. ; 15:2, s. 253-263
- Relaterad länk:
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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
- Two-dimensional polymerisation of a C60 single crystal has been obtained under high-pressure high temperature conditions (700 K - 2 GPa). Crystalline order is preserved but the crystal splits into variants (orientational domains). The analysis of X-ray diffraction and Raman spectroscopy data reveals that the polymer crystal is primarily tetragonal with some admixture of rhombohedral phase. Furthermore, Raman spectroscopy gives evidence for additional C60-C60 dimers, which are probably disordered. For the tetragonal phase, it is shown that successive polymer layers are rotated by about the stacking axis, according to the P42/mmc space group symmetry. The structure of the rhombohedral phase is also clarified. The role of the interlayer interactions in stabilising the two-dimensional polymer phases of C60 is discussed.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Fullerenes
- C60
- high pressure synthesis
- fullerene polymer
- two-dimensional polymer
- tetragonal structure
- rhombohedral structure
- X-ray diffraction
- single crystal
- Raman spectroscopy
- orientational domain
- variant
- Condensed matter physics
- Kondenserade materiens fysik
- fysik
- Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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