High Thermal Conductivity in Adamantine Compounds

In pure crystals the prime cause of thermal resistance at high temperatures is phonon-phonon scattering, whereas at sufficiently low temperatures the phonon 

Thermal conductivity by phonon transportation in the temperature range equal to or higher than Debye temperature is given by  

The thermal conductivity data at room temperature for several adamantine crystals, as reported by Slack, are summarized in Table 16.1 [5]. 

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