title: Synthesis and characterization of lanthanum carbide nanotubes.
abstract: Lanthanum carbide nanotubes have been synthesized by d.c. arc evaporation (approximately 20-30 V, approximately 200 Amp) of lanthanum metal (90 wt.%)-loaded graphite rod in a helium atmosphere (665 mbar). To explore the possibility of formation of lanthanum carbide nanotubes, the experiments were carried out with lanthanum metal in different concentrations (i.e., 30, 50, 70, and 90 wt.%) in the graphite rod. The as-synthesized samples were characterized by transmission electron microscopy and X-ray diffractometry. Lanthanum carbide nanotubes (LCNTs) with a diameter of approximately 65 to 95 nm and a length of approximately 0.2 to 1.5 microns were obtained in this study.
authors.affiliation: Department of Physics, Banaras Hindu University, Varanasi-221005, India.
authors.forename: Kalpana
authors.initials: K
authors.lastname: Awasthi
authors.forename: A K
authors.initials: AK
authors.lastname: Singh
authors.forename: O N
authors.initials: ON
authors.lastname: Srivastava
mesh_terms: D003460:Crystallization / Q000379:methods*; D004563:Electrochemistry / Q000379:methods; D007811:Lanthanum / Q000737:chemistry*; D008422:Materials Testing / Q000379:methods*; D008854:Microscopy, Electron; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000302:isolation & purification*; D011312:Pressure; D013499:Surface Properties; D014835:Volatilization; D014961:X-Ray Diffraction / Q000379:methods
chemical_list: D037742:Nanotubes, Carbon; D007811:Lanthanum