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Effect of dislocations on heat transfer in germanium
Malyshkina O.V.
1, Kaplunov I.A.
1, Mamaev P.V.1, Rogalin V.E.
2, Kropotov G.I.
3
1Tver State University, Tver, Russia
2Institute for Electrophysics and Electric Power, Russian Academy of Sciences, St. Petersburg, Russia
3TYDEX, LLC, St. Petersburg, Russia
2Institute for Electrophysics and Electric Power, Russian Academy of Sciences, St. Petersburg, Russia
3TYDEX, LLC, St. Petersburg, Russia
Email: Olga.Malyshkina@mail.ru, Kaplunov.IA@tversu.ru, tyrok6112@gmail.com, v-rogalin@mail.ru, grigorykropotov@tydex.ru
Comparative studies of the thermal characteristics of the germanium single crystals with dislocations and dislocation-free germanium in the dynamic mode of passage of a temperature wave through a sample were carried out. It is shown that samples of dislocation-free germanium have a higher thermal conductivity coefficient (by 18 % in the crystallographic direction <100> and by 9 % in the direction <111>) compared to samples of germanium with dislocations. At the same time, the difference in the values of the thermal diffusivity coefficients of germanium samples with dislocations and dislocation-free is insignificant. Keywords: crystalline germanium, dislocation-free single-crystal germanium, thermal conductivity, thermal diffusivity, TSW method for studying thermal characteristics.
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