Electrical resistivity and lattice parameter of uranium monocarbide |
| |
Authors: | Matsui Hisayuki Sakanishi Ken-ichi Inagaki Mitsuo Aoyama Hiromi Kirihara Tomoo |
| |
Affiliation: | Faculty of Engineering, Nagoya University, Chikusa-ku, Nagoya, 464 Japan |
| |
Abstract: | The resistivity dependence of as-cast and annealed UC on temperature (77–300 K) as well as the ratio have been investigated experimentally. Additionally, lattice constants of UC have been measured in its nonstoichiometric regions. Estimated values of the electrical resistivity of stoichiometric UC (annealed at 1500°C for 3 h) were (10 ± 2) μΩ · cm at liquid-nitrogen temperature and (34 ± 3) μΩ · cm at room temperature, and the value of the lattice constant was (4.958 ± 0.001) Å at room temperature. It was also estimated that 1 at% of carbon vacancies in UC1?x and oversaturated carbon interstitials in UC1+x result in resistivity increases of (12 ± 2) μΩ · cm and 6 μΩ · cm, respectively. A very narrow nonstoichiometric region was observed in UC at 1500°C. It might lie between UC0.98 and UC1.01 |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|