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Heat capacity and thermal expansion of icosahedral lutetium boride LuB66 |
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| Authors: | V V Novikov D V Avdashchenko A V Matovnikov N V Mitroshenkov S L Bud’ko |
| Institution: | 1. Petrovsky Bryansk State University, 14, Bezhitskaya St., 241036, Bryansk, Russia 2. Ames Laboratory, U.S. DOE, Ames, IA, 50011, USA 3. Department of Physics and Astronomy, Iowa State University, Ames, IA, 50011, USA |
| Abstract: | The experimental values of heat capacity and thermal expansion for lutetium boride LuB66 in the temperature range of 2–300 K were analysed in the Debye–Einstein approximation. It was found that the vibration of the boron sub-lattice can be considered within the Debye model with high characteristic temperatures; low-frequency vibration of weakly connected metal atoms is described by the Einstein model. |
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