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Considerable increase in thermal conductivity of a polycrystalline CVD diamond upon isotope enrichment |
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| Authors: | A V Inyushkin V G Ralchenko A N Taldenkov A A Artyukhov A A Artyukhov Ya M Kravets I P Gnidoi A L Ustinov A P Bolshakov A F Popovich A V Savelyev A V Khomich V Ya Panchenko V I Konov |
| Institution: | (1) Russian Research Center “Kurchatov Institute”, pl. Akademika Kurchatova, 1, 123182 Moscow, Russia;(2) Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russia;(3) Institute of Radioengineering and Electronics, Russian Academy of Sciences, pl. Vvedenskogo, 1, 141190 Fryazino, Russia |
| Abstract: | We measured the temperature dependence of thermal conductivity of a polycrystalline CVD diamond with natural isotope composition and an isotope enriched (99.96% 12C) sample at temperatures from 5 to 420 K. The isotope enriched diamond demonstrates a considerable growth of thermal conductivity at temperatures above 80 K compared to the diamond with natural composition of isotopes. At room temperature the thermal conductivity reaches 24.3 W·cm?1K?1, and the isotope effect makes up not less than 34%. |
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