Phys. Rev. B 47, 14850–14856 (1993)Thermal conductivity of diamond between 170 and 1200 K and the isotope effectReceived 21 September 1992; published in the issue dated 1 June 1993 Measurements on the thermal conductivity of natural and synthetic single-crystal diamond are presented over a wide temperature range. The large isotope effect reported previously has been confirmed. The data have been analyzed using both the Debye model of thermal conductivity, which ignores the N processes, and the Callaway model in the limit that the N processes dominate the phonon scattering. It is found that the observed isotope effect can be accounted for by including the N processes alone, without having to postulate the existence of additional defects. © 1993 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.47.14850
DOI:
10.1103/PhysRevB.47.14850
PACS:
66.70.+f, 63.20.Mt, 63.20.Hp
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