Changes in thermal conductivity anisotropy of the layered crystal Pbl2 under uniaxial compression
E. AndersPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’koiv and Physicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskI. V. VolchokPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’koiv and Physicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskB. Ya. SukharevskiǐPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’koiv and Physicotechnical Institute, Academy of Sciences of the Ukrainian SSR, Donetsk
ABI
Аннотация
Temperature dependences of the thermal conductivity of Pbl2 layered crystals parallel and perpendicular to the layers are studied experimentally in the temperature range 2–30 °K under uniaxial loading. An analysis of the experimental results allows one to assume that the lowering of thermal conductivity parallel to the layers and its increase in the perpendicular direction under compression can be explained by the decrease in the anisotropy of the crystal due to the phonon spectrum becoming “three-dimensional.”
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