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The thermal conductivities of silicon and germanium have been determined using the non-stationary hot wire method. Measurements were carried out over the temperature range 293-1724K on solid and liquid silicon and on liquid germanium in alumina tube. For solid silicon, the thermal conductivities were about 139W/mK at 293K and 19W/mK at 1573K and displayed temperature dependence steeper than T ...
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