caa a22 4500 463221516 CHVBK 20180405153213.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10853-006-1330-y doi (NATIONALLICENCE)springer-10.1007/s10853-006-1330-y Disordering and the electronic transport behaviors of NbC-Al4C3-C composite [Elektronische Daten] [D. Li, S. Ma, W. Li, B. Wu, Z. Zhang] A composite nanomaterial composed of NbC nanocrystals, Al4C3 nanorods and carbon nanofibers as well as amorphous carbon was fabricated by arc-discharging a Nb3Al block as an anode in CH4 gas. The growth process of the NbC-Al4C3-C composite was deduced according to the microstructures of its components and the experimental conditions. NbC nanocrystals with non-stoichiometric chemical composition were in a cubic shape. As the decomposition product of the precursor of CH4 gas, carbon nanofibers were thought to be as templates, reacting with Al atoms, to form Al4C3 nanorods with a diameter of 15-40nm. A thin layer of aluminum carbide oxide covered the surface of Al4C3 nanorods. The temperature dependence of the resistivity for the NbC-Al4C3-C composite was described by the variable-range-hopping (VRH) model between about 100K and 300K because of the strong localization of electrons by disorder in the carbon matrix. Below 100K, the transport behaviors of the pellet deviated from the VRH model due to the conduction competition between the semi-conducting carbon matrix and metallic NbC nanocrystals. Springer Science+Business Media, LLC, 2007 Li D. Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, 72 Wenhua Road, 110016, Shenyang, P.R. China aut Ma S. Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, 72 Wenhua Road, 110016, Shenyang, P.R. China aut Li W. Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, 72 Wenhua Road, 110016, Shenyang, P.R. China aut Wu B. Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, 72 Wenhua Road, 110016, Shenyang, P.R. China aut Zhang Z. Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, 72 Wenhua Road, 110016, Shenyang, P.R. China aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/16(2007-08-01), 6929-6934 0022-2461 42:16<6929 2007 42 10853 https://doi.org/10.1007/s10853-006-1330-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1330-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li D. Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, 72 Wenhua Road, 110016, Shenyang, P.R. China aut NATIONALLICENCE 700 1- Ma S. Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, 72 Wenhua Road, 110016, Shenyang, P.R. China aut NATIONALLICENCE 700 1- Li W. Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, 72 Wenhua Road, 110016, Shenyang, P.R. China aut NATIONALLICENCE 700 1- Wu B. Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, 72 Wenhua Road, 110016, Shenyang, P.R. China aut NATIONALLICENCE 700 1- Zhang Z. Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, 72 Wenhua Road, 110016, Shenyang, P.R. China aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/16(2007-08-01), 6929-6934 0022-2461 42:16<6929 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer