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Single-Walled Carbon Nanotubes Shock-Compressed to 0.5 Mbar
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science. pablo.botella.vives@ltu.se.
Institut Jean Lamour, UMR 7198 CNRS–Université de Lorraine.
LCPME UMR 7564 CNRS-Université de Lorraine.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
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2017 (English)In: Physica status solidi. B, Basic research, ISSN 0370-1972, E-ISSN 1521-3951, Vol. 254, no 11, pn/a-n/a p.Article in journal (Refereed) Published
Abstract [en]

Following our dynamic (shock wave) compression experiments on single-walled (SW) HiPCO carbon nanotubes (CNTs) [M. Noël et al., Phys. Stat us Sol idi RRL 2014, 8, 935], we extended the range of shock compression to ≈0.5 Mbar in quest of new forms of nanostructured carbon derived from crushed SWCNTs. The material recovered after shock is characterised by multi-wavelength Raman spectroscopy and high-resolution transmission electron microscopy (HRTEM). Two distinct types of material are identified: (i) multi-layer graphene (MLG) and (ii) a mixture of disordered nanometer-sized graphene clusters and amorphous carbon. No diamond-like carbon or carbon nano-onions are found in the sample. The coherent scattering size of MLG clusters ( La) is estimated at 30 nm from the D- to G-band intensity ratio dependence on the photon excitation energy. We demonstrate the capabilities of Raman spectroscopy for characterisation and analysis of the multi-phase spectra of disordered carbon. Particulars of CNT transformation to other structural forms of carbon at high pressure/temperature are discussed

Place, publisher, year, edition, pages
John Wiley & Sons, 2017. Vol. 254, no 11, pn/a-n/a p.
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Experimental physics
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URN: urn:nbn:se:ltu:diva-66689DOI: 10.1002/pssb.201700315OAI: oai:DiVA.org:ltu-66689DiVA: diva2:1159089
Note

Validerad;2017;Nivå 2;2017-11-21 (andbra)

Available from: 2017-11-21 Created: 2017-11-21 Last updated: 2017-11-24Bibliographically approved

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