Change of the dynamic characteristics of layered crystals with intercalated organic molecules
B. I. VerkinPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRB. Ya. SukharevskiǐPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRA. M. GurevichPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRA. V. AlapinaPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRYu. A. DushechkinPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR
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It was demonstrated experimentally that Pbl2 in the 2−20 °K temperature region has a temperature dependence of heat capacity characteristic for layered structures. The change of Cp(T) of Pbl2 as a result of intercalated piperidine is due to intensification of the interaction of the layers and, possibly, the contribution of electrons to the heat capacity. Estimates of the electronic heat capacity obtained within the framework of a two-dimensional model of free electrons are given.
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