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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 (author)
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- Wågberg, Thomas (author)
- Umeå universitet,Institutionen för fysik
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- Sundqvist, Bertil (author)
- Umeå universitet,Institutionen för fysik
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(creator_code:org_t)
- Elsevier BV, 2005
- 2005
- English.
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In: Carbon. - : Elsevier BV. - 0008-6223. ; 43:4, s. 709-16
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- 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
Publication and Content Type
- ref (subject category)
- art (subject category)
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