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Proceedings Paper

Thermal Diffusivity Of Diamond Films
Author(s): Sacharia Albin; William P. Winfree; B. Scott Crews
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Paper Abstract

We have developed a laser pulse technique to measure the thermal diffusivity of diamond films deposited on a silicon substrate. The effective thermal diffusivity of diamond film on silicon was measured by observing the phase and amplitude of the cyclic thermal waves generated by the laser pulses. An analytical model is developed to calculate the effective in-plane (face-parallel) diffusivity of a two layer system. The model is used to reduce the effective thermal diffusivity of the diamond/silicon sample to a value for the thermal diffusivity and conductivity of the diamond film. Phase and amplitude measurements give similar results. The thermal conductivity of the films is found to be better than that of type la natural diamond.

Paper Details

Date Published: 15 January 1989
PDF: 10 pages
Proc. SPIE 1146, Diamond Optics II, (15 January 1989); doi: 10.1117/12.962065
Show Author Affiliations
Sacharia Albin, Old Dominion University (United States)
William P. Winfree, NASA Langley Research Center (United States)
B. Scott Crews, NASA Langley Research Center (United States)


Published in SPIE Proceedings Vol. 1146:
Diamond Optics II
Albert Feldman; Sandor Holly, Editor(s)

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