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Application of photoacoustic and photothermal techniques for heat conduction measurements in a free-standing chemical vapor-deposited diamond film |
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| Authors: | C Glorieux J De Groote J Fivez W Lauriks J Thoen |
| Affiliation: | (1) Laboratorium voor Akoestiek en Warmtegeleiding, Departement Natuurkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium;(2) EHSAL, Stormstraat 2, B-1000 Brussel;(3) Faculteit TEW, Universitaire Faculteiten St. Ignatius, Prinsstraat 13, B-2000 Antwerpen, Belgium |
| Abstract: | Heat conduction in a free-standing chemical vapor-deposited polycristalline diamond film has been investigated by means of combined front and rear photoacoustic signal detection techniques and also by means of a “mirage” photothermal beam deflection technique. The results obtained with the different techniques are consistent with a value of α=(5.5±0.4)×10−4 m2 · s−1 for thermal diffusivity, resulting in a value ofκ=(9.8±0.7)×102 W·m−1·K−1 for thermal conductivity when literature values for the density and heat capacity for natural diamond are used. |
| Keywords: | chemical vapor-deposited diamond film heat conduction mirage effect photoacoustics thermal conductivity thermal diffusivity |
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