Measurements of the heat capacity of diamond with different isotopic compositions

M. Cardona; R. K. Kremer; M. Sanati; S. K. Estreicher; T. R. Anthony

doi:10.1016/j.ssc.2004.11.047

Measurements of the heat capacity of diamond with different isotopic compositions

M. Cardona, R. K. Kremer, M. Sanati, S. K. Estreicher, T. R. Anthony

Physics

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

We report measurements of the heat capacity C_p of diamond with several isotopic compositions (¹²C_1-x¹³C _x) in the 20-280 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>150 K. At lower temperatures, the samples with isotopic compositions different from the natural one display an anomalous increase in C_p/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.

Original language	English
Pages (from-to)	465-468
Number of pages	4
Journal	Solid State Communications
Volume	133
Issue number	7
DOIs	https://doi.org/10.1016/j.ssc.2004.11.047
State	Published - Feb 2005

Keywords

A. Diamond
D. Heat capacity
D. Stable isotopes

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10.1016/j.ssc.2004.11.047

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title = "Measurements of the heat capacity of diamond with different isotopic compositions",

abstract = "We report measurements of the heat capacity Cp of diamond with several isotopic compositions (12C1-x13C x) in the 20-280 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>150 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.",

keywords = "A. Diamond, D. Heat capacity, D. Stable isotopes",

author = "M. Cardona and Kremer, {R. K.} and M. Sanati and Estreicher, {S. K.} and Anthony, {T. R.}",

note = "Funding Information: We thank M. Amer for a critical reading of the manuscript and G. Siegle for experimental assistance. The work of SKE is supported in part by the R. A. Welch Foundation and the Alexander von Humboldt Stiftung. M. C. gratefully acknowledges the hospitality of the Institut of Materials Sciences of Barcelona (CSIC) and the ICREA Foundation (Barcelona) for support during part of this work.",

year = "2005",

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doi = "10.1016/j.ssc.2004.11.047",

language = "English",

volume = "133",

pages = "465--468",

journal = "Solid State Communications",

issn = "0038-1098",

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T1 - Measurements of the heat capacity of diamond with different isotopic compositions

AU - Cardona, M.

AU - Kremer, R. K.

AU - Sanati, M.

AU - Estreicher, S. K.

AU - Anthony, T. R.

N1 - Funding Information: We thank M. Amer for a critical reading of the manuscript and G. Siegle for experimental assistance. The work of SKE is supported in part by the R. A. Welch Foundation and the Alexander von Humboldt Stiftung. M. C. gratefully acknowledges the hospitality of the Institut of Materials Sciences of Barcelona (CSIC) and the ICREA Foundation (Barcelona) for support during part of this work.

PY - 2005/2

Y1 - 2005/2

N2 - We report measurements of the heat capacity Cp of diamond with several isotopic compositions (12C1-x13C x) in the 20-280 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>150 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.

AB - We report measurements of the heat capacity Cp of diamond with several isotopic compositions (12C1-x13C x) in the 20-280 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>150 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.

KW - A. Diamond

KW - D. Heat capacity

KW - D. Stable isotopes

UR - http://www.scopus.com/inward/record.url?scp=12244253760&partnerID=8YFLogxK

U2 - 10.1016/j.ssc.2004.11.047

DO - 10.1016/j.ssc.2004.11.047

M3 - Article

AN - SCOPUS:12244253760

SN - 0038-1098

VL - 133

SP - 465

EP - 468

JO - Solid State Communications

JF - Solid State Communications

IS - 7

ER -

Measurements of the heat capacity of diamond with different isotopic compositions

Abstract

Keywords

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