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Why is diamond a bad conductor of electricity but a good conductor of heat? |
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Answer» iamond is a good electrical insulator with resistivity of 100 GΩ·m to 1 EΩ·m, blue diamonds are natural semi-conductors do to boron impurities, except for blue-grey and blue diamonds from the Australian Argyle mine, which CONTAIN hydrogen impurities.Thermal conductivity of natural diamond is about 2200 W/(m·K), five TIMES that of copper. And monocrystalline synthetic diamond has the highest thermal conductivity of any KNOWN solid at room temperature: 3320 W/(m·K). At 104 K monocrystalline synthetic diamond reaches 41000 W/(m·K). |
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