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Spectroscopic study of phase transformations between orthorhombic and tetragonal C60 polymers
Department of Physics, Umeå University.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-5145-1560
Department of Physics, Umeå University.
2006 (English)In: European Physical Journal B: Condensed Matter Physics, ISSN 1434-6028, E-ISSN 1434-6036, Vol. 49, no 1, p. 59-65Article in journal (Refereed) Published
Abstract [en]

We present a detailed study of transformations between the orthorhombic and tetragonal polymeric states of C60. The transformations are characterised by Raman spectroscopy and X-ray diffraction. We show that the transformation from the orthorhombic (O) phase to the tetragonal (T) phase is very fast and our results indicate that the transformation goes via an intermediate dimer (D) state in a two-stage process, O → D and D → T the tetragonal to the orthorhombic phase is significantly slower, indicating a high-energy threshold to break the polymer bonds at the temperatures used. The results also support earlier suggestions that the tetragonal phase contains disordered dimers that can be viewed as lattice defects in the formation of higher polymers.

Place, publisher, year, edition, pages
2006. Vol. 49, no 1, p. 59-65
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Other Physics Topics
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Fysik
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URN: urn:nbn:se:ltu:diva-7777DOI: 10.1140/epjb/e2006-00030-4ISI: 000235058900006Scopus ID: 2-s2.0-31744446635Local ID: 63272ef0-e6ab-11db-8a98-000ea68e967bOAI: oai:DiVA.org:ltu-7777DiVA, id: diva2:980667
Note
Validerad; 2006; 20070409 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Soldatov, Alexander

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