Elaboration and spectroscopic characterization of carbon nanostructures

M. Lamy de la Chapelle; Serge Lefrant; P. Molinie; C. Godon; W. K. Maser; Patrick Bernier; P. Ajayan

doi:10.1117/12.262985

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16 December 1996 Elaboration and spectroscopic characterization of carbon nanostructures

M. Lamy de la Chapelle, Serge Lefrant, P. Molinie, C. Godon, W. K. Maser, Patrick Bernier, P. Ajayan

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Proceedings Volume 2854, Fullerenes and Photonics III; (1996) https://doi.org/10.1117/12.262985
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

We discuss the production of carbon nanotubes by the electric arc-discharge method. Co-evaporation of metals, Yttrium, Lutetium, Nickel and Boron have been used with the following stoichiometry: YNi₂B₂C or LuNi₂B₂C. We have obtained singlewalled and multiwalled nanotubes and also crystalline nanoparticles embedded in glassy carbon as evidenced by HRTEM and x-ray diffraction observations. The SQUID measurements showed a superconducting transition which would mean that crystalline particles present the superconducting phases of YNi₂B₂C, YNi₄B₄C or LuNi₂B₂C. HRTEM investigations are corroborated by Raman spectra which exhibit the features characteristic of singlewalled nanotubes by the presence of three main peaks at approximately 1580 cm^-1, approximately 1350 cm^-1 and approximately 180 cm^-1. Other samples present on the E_2g2 mode and those assigned to glassy carbon at approximately 1350 cm^-1 and approximately 1600 cm^-1.

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M. Lamy de la Chapelle, Serge Lefrant, P. Molinie, C. Godon, W. K. Maser, Patrick Bernier, and P. Ajayan "Elaboration and spectroscopic characterization of carbon nanostructures", Proc. SPIE 2854, Fullerenes and Photonics III, (16 December 1996); https://doi.org/10.1117/12.262985

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