Low-temperature thermodynamic properties of holmium selenide (2:3)

作者：Bespyatov M A; Musikhin A E; Naumov V N; Zelenina L N; Chusova T P; Nikolaev R E; Naumov N G

来源：Journal of Chemical Thermodynamics, 2018, 118: 21-25.

DOI：10.1016/j.jct.2017.10.013

• Heat capacity
• Thermodynamic functions
• Holmium selenide

Holmium selenide Ho2Se3(cr) was synthesized and characterized by powder X-ray diffraction and energy dispersive analysis. The heat capacity of Ho2Se3(cr) has been measured by adiabatic method in the temperature range of (4.75-302.60) K. The pronounced lambda-anomalies were found in C-p,C-m(T) dependence with the maxima at temperatures T-C1 = 6.03 K and T-C2 = 228.40 K. A conclusion was drawn that the phase transition associated with antiferromagnetic ordering is observed at T-C1. The values of thermodynamic function (entropy, enthalpy and Gibbs reduced energy) were calculated from the experimental C-p(T) dependence. Absolute entropy value was used for calculation of Ho2Se3(cr) formation entropy at T = 298.15 K.

• 出版日期2018-3