Thermal Conductivity of Germanium from 3°K to 1020°K
- 1 November 1960
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 120 (3) , 782-789
- https://doi.org/10.1103/PhysRev.120.782
Abstract
The thermal conductivity of germanium has been measured from 3°K to 1020°K. From 3°K to 300°K a longitudinal heat flow method was used. A radial flow method employing small samples was used from 300°K to 1020°K. The advantages and special experimental techniques required in this radial method are discussed. From 3°K to 10°K the results are explained by a simple combination of boundary plus isotope scattering in which all phonon-phonon processes can be neglected. At all temperatures below 940°K the heat is carried by phonons, but at 940°K a sharp rise in the thermal conductivity indicates the presence of a second conduction mechanism which may be electron-hole pairs.Keywords
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