Thermal conductivity of isotopically modified single crystal diamond

Lanhua Wei, P. K. Kuo, R. L. Thomas, T. R. Anthony, and W. F. Banholzer
Phys. Rev. Lett. 70, 3764 – Published 14 June 1993
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Abstract

We present new experimental results on the thermal conductivity of isotopically enriched C12 diamond crystals at low temperatures. To our knowledge, the measured value for a 99.9% C12 crystal at 104 K, 410 W/cm K, is the highest measured thermal conducitivity for a solid above liquid nitrogen temperature. Our measured temperature dependent conductivities for the isotopically enriched diamond and natural abundance diamond specimens are well described by Callaway’s theoretical model. We predict that the thermal conductivity of a 99.999% C12 diamond crystal should exceed 2000 W/cm K at ∼80 K.

  • Received 16 February 1993

DOI:https://doi.org/10.1103/PhysRevLett.70.3764

©1993 American Physical Society

Authors & Affiliations

Lanhua Wei, P. K. Kuo, and R. L. Thomas

  • Department of Physics and Institute for Manufacturing Research, Wayne State University, Detroit, Michigan 48201

T. R. Anthony and W. F. Banholzer

  • General Electric Corporate Research and Development Center, Schenectady, New York 12301

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Issue

Vol. 70, Iss. 24 — 14 June 1993

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