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In situ Raman and photoluminescence study on pressure-induced phase transition in C60 nanotubes
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2012 (English)In: Journal of Raman Spectroscopy, ISSN 0377-0486, E-ISSN 1097-4555, Vol. 43, no 6, 737-740 p.Article in journal (Refereed) Published
Abstract [en]

Single crystalline C60 nanotubes having face-centered-cubic structure with diameters in the nanometer range were synthesized by a solution method. In situ Raman and photoluminescence spectroscopy under high pressure were employed to study the structural stabilities and transitions of the pristine C60 nanotubes. A phase transition, probably because of the orientational ordering of C60 molecules, from face-centered-cubic structure to simple cubic structure occurred at the pressure between 1.46 and 2.26 GPa. At above 20.41 GPa, the Raman spectrum became very diffuse and lost its fine structure in all wavenumber regions, and only two broad and asymmetry peaks initially centered at 1469 and 1570cm-1 were observed, indicating an occurrence of amorphization. This amorphous phase remained to be reversible until 31.1 GPa, and it became irreversible to the ambient pressure after the pressure cycle of 34.3 GPa was applied.

Place, publisher, year, edition, pages
2012. Vol. 43, no 6, 737-740 p.
Keyword [en]
C60, nanotube, high pressure, phase transition, amorphization, Raman spectroscopy, photoluminiscence
National Category
Condensed Matter Physics
Research subject
URN: urn:nbn:se:umu:diva-57441DOI: 10.1002/jrs.3087ISI: 000305391800009OAI: diva2:541739
Swedish Research Council, 621-2010-3732

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Available from: 2012-07-23 Created: 2012-07-23 Last updated: 2015-09-28Bibliographically approved

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Yao, MingguangSundqvist, Bertil
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