Simultaneous measurements of complex heat capacity and complex thermal conductivity by two-channel AC calorimeter

摘要: The new capabilities of the advanced two-channel AC calorimetry, when working at frequencies above quasi-static limit, were shown. idea method was to use information about phases and amplitudes temperature oscillations on both sides a plate-like sample for direct simultaneous determination complex heat capacity C(ω) thermal conductivity λ(ω), measured sample. Therefore, complete set parameters can be in same experiment. provides possibility answer fundamental question value imaginary part conductivity. It found, that argument is considerably small with respect capacity. Thus, least within error experiment glass transition glycerol considered as real valued parameter. In spite strong frequency dependence capacity, no dependency observed.