Open AccessPhonon density of states and thermodynamic properties of Eu2(C11H19O2)6
Author(s) -
A.E. Musikhin,
M.A. Bespyatov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1382/1/012183
Subject(s) - heat capacity , europium , thermodynamics , helmholtz free energy , internal energy , work (physics) , phonon , melting point , atmospheric temperature range , standard molar entropy , materials science , specific heat , chemistry , condensed matter physics , physics , optoelectronics , luminescence , composite material
In the work, the phonon density of states of europium dipivaloylmethanate was calculated based on the experimental low-temperature heat capacity, and basic characteristic temperatures related to the moments of the g (ω) were obtained. The molar thermodynamic functions of Eu 2 (C 11 H 19 O 2 ) 6 at constant volume up to the melting point of 464 K were calculated: heat capacity, entropy, internal energy, and Helmholtz energy. The zero-point energy was determined, and total internal energy was obtained. Accuracy of the obtained results was estimated. The approach used to obtain the properties of Eu 2 (C 11 H 19 O 2 ) 6 is general, it can be used to study a wide range of solids.