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Synthesis of superhard 3D-polymeric C60 fullerites from rhombohedral 2D-polymer by high-pressure-high-temperature treatment.
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2003 (English)In: High Pressure Research vol. 23, issue 3: Proceedings of the 40th European High Pressure Research Group Meeting on Advances in High Pressure Research (EHPRG'40), London: Taylor & Francis , 2003, 259-264 p.Conference paper, Published paper (Refereed)
Abstract [en]

Rhombohedral C60 polymer was subjected to high-pressure-high-temperature treatment at P =13 GPa, T =620-1620 K. After quenching, crystalline and disordered structures with densities in the range of 2.1-2.9 g cm-1 were obtained. The structures of the samples have been investigated by powder X-ray diffraction and Raman scattering. DSC analysis showed a transformation of the polymeric structure into monomeric on annealing in the range 400-640 K. The temperature dependence of the electrical resistance of samples with disordered structure was measured in the range 2.5-300K. For different samples, the conductivity was proportional to T1/2, T3/2, T4 and exp(-1/T1/4).

Place, publisher, year, edition, pages
London: Taylor & Francis , 2003. 259-264 p.
Series
High Pressure Research, ISSN 0895-7959 ; 23
National Category
Condensed Matter Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:umu:diva-19537DOI: 10.1080/0895795032000102450OAI: oai:DiVA.org:umu-19537DiVA: diva2:201936
Projects
Fullerenes, C60, high pressure, polymer, rhombohedral polymer, phase transitions, differential scanning calorimetry, DSC, Raman spectroscopy, X-ray diffraction, XRD, disordered structure, high temperature, electrical transport, resistivity, conductivity
Available from: 2009-03-06 Created: 2009-03-06 Last updated: 2010-01-19

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Fransson, ÅkeWågberg, ThomasSundqvist, Bertil

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