Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10653243 | Solid State Communications | 2005 | 4 Pages |
Abstract
We report measurements of the heat capacity Cp of diamond with several isotopic compositions (12C1âx13Cx) in the 20-280Â K temperature range. The results, in particular the derivative of the specific heat with respect to the average isotopic mass, are compared with recent ab initio calculations. Agreement is good for T>150Â K. At lower temperatures, the samples with isotopic compositions different from the natural one display an anomalous increase in Cp/T3 with decreasing temperature which is attributed to the presence of metallic inclusions stemming from the metal used as a solvent in the high-pressure high-temperature growth process.
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Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
M. Cardona, R.K. Kremer, M. Sanati, S.K. Estreicher, T.R. Anthony,