Effect of Dislocations on the Low Temperature Thermal Conductivity in Germanium
- 1 April 1974
- journal article
- research article
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 36 (4), 1075-1083
- https://doi.org/10.1143/jpsj.36.1075
Abstract
The thermal conductivity vs temperature relation in deformed germanium single crystals is measured in the temperature range from 1.5 to 30 K. The results are analysed on the basis of the Callaway model. Klemens' theory on the scattering of phonons due to the static strain field of dislocations accounts for the experimental results reasonably well. The dislocation densities deduced from the thermal conductivity data are greater than those counted by direct observation of dislocations by factors less than 3.7 and 2.1 in specimens deformed to stage I and stage II, respectively. Discrepancies between the theoretical curves and the experimental curves are found at temperatures around 20 K and below 2.2 K. The former is accounted for by assuming that point-defect like imperfections have been introduced into specimens during deformation, while the latter could be attributed to the scattering of phonons due to dangling electrons located at the dislocation core.Keywords
This publication has 36 references indexed in Scilit:
- Interaction between Thermal Phonons and Dislocations in LiFPhysical Review B, 1972
- Internal friction in deformed germanium single crystalsPhysica Status Solidi (a), 1972
- Thermal Conductivity of-Type Germanium from 0.3 to 4.2 KPhysical Review B, 1971
- DISLOCATION DISTRIBUTION IN DEFORMED GERMANIUMCanadian Journal of Physics, 1967
- Der Gitterwärmewiderstand durch Versetzungen in Legierungen bei tiefen TemperaturenPhysica Status Solidi (b), 1967
- Scattering of Phonons by DislocationsJournal of Applied Physics, 1966
- Thermal Conductivity of Solids IV: Resonance Fluorescence Scattering of Phonons by Donor Electrons in GermaniumPhysical Review B, 1963
- Der Gitterwärmewiderstand von StufenversetzungenPhysica Status Solidi (b), 1963
- Theory of Dislocation Mobility in Pure SlipJournal of Applied Physics, 1962
- Theory of Thermal Conductivity of Solids at Low TemperaturesReviews of Modern Physics, 1961