Thermodynamics of caesium niobium molybdenum oxide CsNbMoO6статья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 1 апреля 2022 г.
Аннотация:Firstly in the present research, the heat capacity C = f(T) of crystalline caesium niobium molybdenum oxide CsNbMoO6 was measured in the range of T = (6 and 340) K by the precise adiabatic vacuum calorimeter. The phase purity and composition homogeneity of prepared sample have been confirmed by X-ray diffraction analysis and X-ray microanalysis. The standard thermodynamic functions (p° = 0.1 MPa) of CsNbMoO 6, were calculated using the obtained experimental data from T = 0 to 340 K. The low-temperature (T < 50 K) heat capacity dependence was analyzed on the basis of the Debye heat capacity theory of solids and its multifractal model, so the characteristic temperature and the fractal dimension were determined, and chain-layered structure topology of the studied compound was established. The standard thermodynamic functions of crystalline CsNbMoO 6 formation at T = 298.15 K were calculated.