Electrical resistivities of the uranium carbides |
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| Authors: | Hisayuki Matsui Masayoshi Tamaki Shoichi Nasu Toshimasa Kurasawa |
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| Institution: | Department of Nucleat Engineering, Nagoya Univ., Furo-cho, Chikusa-ku, Nagoya 464, Japan;Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken, 319-11, Japan |
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| Abstract: | Electrical resistivities of arc-melted uranium carbides, UC, UC2, U2C3 and UC + UC2, were measured over the temperature range between 4 and 1900 K. The monocarbide, dicarbide and the mixture of carbides showed metallic character in their resistivity dependence on temperature above 30 K, while below this the resistivities were constant. U2C3 showed a knee in the resistivity curve at 54.0 K corresponding to a magnetic transition. Above 1100 K, the resistivity of U2C3 did not vary with temperature. The resistivity of the mixture (UC + UC2 with U2C3 precipitates) showed an arrest between 800 and 950 K. |
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