Thermophysical characteristics of EuF2.136 crystalстатья
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Дата последнего поиска статьи во внешних источниках: 3 октября 2019 г.
Аннотация:Single crystals of EuF2.136 solid solution with a f luorite-type structure (sp. gr. Fm3¯¯¯m, a = 5.82171(5) Å) have been grown by the Bridgeman method from a melt. Their thermal conductivity k(T) in the temperature range of 50–300 K and heat capacity С Р (T) at 63–300 K have been studied experimentally for the first time. At T = 300 K the thermophysical characteristics are as follows: thermal conductivity k = 2.13 W/(m K), heat capacity С Р = 73 J/(mol K), and phonon mean free path l ≈ 11 Å. The temperature dependences of entropy S(T), enthalpy H(T), and phonon mean free path l(T) in EuF2.136 crystal are determined.