Spatial distribution of thermal conductivity of diamond wafers as measured by laser flash technique

Victor G. Ralchenko; A. Vlasov; Igor I. Vlasov; Boris V. Zubov; Alexander P. Nikitin; A. V. Khomich

doi:10.1117/12.328209

20 October 1998 Spatial distribution of thermal conductivity of diamond wafers as measured by laser flash technique

Victor G. Ralchenko, A. Vlasov, Igor I. Vlasov, Boris V. Zubov, Alexander P. Nikitin, A. V. Khomich

Proceedings Volume 3484, Lasers in Synthesis, Characterization, and Processing of Diamond; (1998) https://doi.org/10.1117/12.328209
Event: Lasers in Synthesis, Characterization, and Processing of Diamond, 1997, Tashkent, Uzbekistan

Abstract

Thermal conductivity perpendicularly to diamond film surface was measured using a laser flash technique. Polycrystalline diamond wafers of up to 500 microns thickness and 2.25 inch diameter were produced in microwave plasma at different deposition conditions. Thermal conductivity (TC) was determined from heat propagation time across the wafer after short pulse of a Nd:YAG laser absorbed at sample surface. Distributions of TC along wafer radius were measured with 1 mm spatial resolution, they correlate to optical absorption, Raman diamond peak width and amorphous carbon concentration in the material. The best TC values of 18 W/cmK were measured for selected samples.

Citation Download Citation

Victor G. Ralchenko, A. Vlasov, Igor I. Vlasov, Boris V. Zubov, Alexander P. Nikitin, and A. V. Khomich "Spatial distribution of thermal conductivity of diamond wafers as measured by laser flash technique", Proc. SPIE 3484, Lasers in Synthesis, Characterization, and Processing of Diamond, (20 October 1998); https://doi.org/10.1117/12.328209

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available