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Influence of the pr...
Influence of the pressure-temperature treatment on the polymerization of C60 single crystals at 2 GPa - 700 K
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Moret, Roger (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)
- Elsevier BV, 2005
- 2005
- Engelska.
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Ingår i: Carbon. - : Elsevier BV. - 0008-6223. ; 43:4, s. 709-16
- 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
- X-ray diffraction and Raman spectroscopy have been used to characterize the structures obtained when C-60 single crystals are treated at 2GPa-700K. Two different experimental procedures have been applied: the temperature is raised before the pressure is applied, or the opposite. The "heating-then-pressing" path leads to the tetragonal polymer structure (P4(2)/mmc) together with a minor fraction of rhombohedral structure, which confirms previous results. In contrast, the "pressing-then-heating" path leads to a different state presenting similarities with both the rhombohedral and the disordered dimer structures. The results are discussed in light of the orientational and dynamical aspects of the C60 polymerization.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- C60
- fullerenes
- high pressure
- polymers
- orthorhombic
- tetragonal
- phase transformation
- structural transformation
- high pressure
- high temperature
- Raman spectroscopy
- X-ray diffraction
- XRD
- dimers
- Condensed matter physics
- Kondenserade materiens fysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Carbon
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