Thermodynamic properties of nitrogen at high pressures

1972 ◽  
Vol 10 (3) ◽  
pp. 423-432 ◽  
Author(s):  
A. A. Antanovich ◽  
M. A. Plotnikov ◽  
G. Ya. Savel'ev
Keyword(s):  
Thermodynamic Properties ◽  
High Pressures

Study of thermodynamic properties of cerium dioxide under high pressures

2010 ◽  
Vol 49 (4) ◽  
pp. S355-S358 ◽  
Author(s):  
Vu Van Hung ◽  
Le Thi Mai Thanh ◽  
K. Masuda-Jindo
Keyword(s):  
Thermodynamic Properties ◽  
Cerium Dioxide ◽  
High Pressures

Thermodynamic Properties of CaSiO3 Perovskite at High Pressure and High Temperature

2009 ◽  
Vol 64 (5-6) ◽  
pp. 399-404 ◽  
Author(s):  
Zi-Jiang Liu ◽  
Xiao-Ming Tan ◽  
Yuan Guo ◽  
Xiao-Ping Zheng ◽  
Wen-Zhao Wu
Keyword(s):  
Thermodynamic Properties ◽  
First Principles ◽  
Density Functional ◽  
High Pressures ◽  
Local Density ◽  
Harmonic Approximation ◽  
Debye Model ◽  
Functional Theory ◽  
Casio3 Perovskite ◽  
First Time

The thermodynamic properties of tetragonal CaSiO3 perovskite are predicted at high pressures and temperatures using the Debye model for the first time. This model combines the ab initio calculations within local density approximation using pseudopotentials and a plane wave basis in the framework of density functional theory, and it takes into account the phononic effects within the quasi-harmonic approximation. It is found that the calculated equation of state is in excellent agreement with the observed values at ambient condition. Based on the first-principles study and the Debye model, the thermal properties including the Debye temperature, the heat capacity, the thermal expansion and the entropy are obtained in the whole pressure range from 0 to 150 GPa and temperature range from 0 to 2000 K.

The representation of thermodynamic properties at high pressures

1985 ◽  
Vol 46 (12) ◽  
pp. 1427-1429 ◽  
Author(s):  
Armando Fernández Guillermet ◽  
Per Gustafson ◽  
Mats Hillert
Keyword(s):  
Thermodynamic Properties ◽  
High Pressures

scholarly journals InBO3 and ScBO3 at high pressures: An ab initio study of elastic and thermodynamic properties

2016 ◽  
Vol 98 ◽  
pp. 198-208 ◽  
Author(s):  
O. Gomis ◽  
H.M. Ortiz ◽  
J.A. Sans ◽  
F.J. Manjón ◽  
D. Santamaría-Pérez ◽  
...  
Keyword(s):  
Thermodynamic Properties ◽  
Ab Initio ◽  
High Pressures ◽  
Ab Initio Study

Density, speed of sound and derived thermodynamic properties of binary liquid mixtures of 1-chlorohexane with toluene and tetradecane under high pressures

2021 ◽  
Vol 154 ◽  
pp. 106329
Author(s):  
Alexander P. Shchamialiou ◽  
Vladimir S. Samuilov ◽  
Nadejda V. Holubeva ◽  
Dana Drăgoescu ◽  
Florinela Sîrbu
Keyword(s):  
Thermodynamic Properties ◽  
Speed Of Sound ◽  
High Pressures ◽  
Liquid Mixtures ◽  
Binary Liquid Mixtures ◽  
Binary Liquid

Ion-Electron Interaction Contribution to the Helmholtz Free Energy for Fully Ionized Hydrogen Plasma

2012 ◽  
Vol 229-231 ◽  
pp. 991-994
Author(s):  
Xing Rong Zheng ◽  
Chun Ling Tian ◽  
Na Wu ◽  
Bo Wu ◽  
Xiao Bing Wang
Keyword(s):  
Free Energy ◽  
Low Temperature ◽  
Thermodynamic Properties ◽  
High Pressures ◽  
Helmholtz Free Energy ◽  
Hydrogen Plasma ◽  
Padé Approximant ◽  
Electron Interaction ◽  
Pade Approximant ◽  
Interaction Contribution

The Padé approximation is a very important description of thermodynamic properties of fully ionized hydrogen at high pressures and temperatures. By comparing of several reported Padé approximants via calculation of the ion-electron interaction contribution to the Helmholtz free energy of the fully ionized hydrogen plasma, we find that Padé approximant proposed by Stolzman gives an unphysical odd local minimal appears at low temperature( ), and gradually fade away with the increase of temperature, implying a prominent limit of low temperature. While Chabrier et al. developed a more reasonable Padé approximant for the contribution of ion-electron interaction on the Helmholtz free energy. Analyses on isotherm curves indicate that the thermodynamic properties of the ion-electron interaction contribution to the Helmholtz free energy described by the revised Padé approximant is very stable at all temperatures and pressures without any unphysical effects at low temperatures.

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