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Photothermal and micro-thermal characterization of metal coated diamond crystallites |
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| Authors: | I Delgadillo-Holtfort E Neubauer J S Antoniow J Gibkes M Chirtoc B K Bein J Pelzl |
| Institution: | (1) Instituto de Física de la Universidad de Guanajuato, IFUG, Apdo. E-143 León, Gto., Mexico;(2) Institut für Experimentalphysik, Ruhr-Universitat, 44801 Bochum, Germany;(3) ARC Seibersdorf Research, Dept. Materials Research, 2444 Seibersdorf, Austria;(4) LTP, UTAP, Université de Reims, BP. 1039, 51687 Reims Cedex 2, France |
| Abstract: | Photoacoustic effect and scanning near field microscopy have been applied to characterise the thermal properties of diamond crystallites which were coated by a Cu film, a Cr-film and a Cr-Cu film. The Cu-coated diamond exhibits a considerable thermal barrier at the Cu-diamond interface which had disappeared for the crystallites with a thin bond Cr-layer between diamond and Cu. The local inspection of the thermal conductivity with a thermal nano-probe operated in the 3ω-mode reveals slight local variations of the thermal conductivity of the Cr-coated crystallite. |
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