On the pressure (volume) dependence of Grüneisen parameter, Debye temperature and thermal expansivity in ɛ-Fe

2004 ◽  
Vol 241 (11) ◽  
pp. 2477-2481 ◽  
Author(s):  
Quan Liu ◽  
Li-rong Chen
Keyword(s):  
Debye Temperature ◽  
Thermal Expansivity ◽  
Grüneisen Parameter ◽  
Gruneisen Parameter ◽  
Volume Dependence

ENTROPY FOR PERICLASE AT HIGH COMPRESSIONS AND AT HIGH TEMPERATURES

2011 ◽  
Vol 25 (28) ◽  
pp. 2183-2191 ◽  
Author(s):  
S. K. SHARMA ◽  
B. K. SHARMA ◽  
R. KUMAR ◽  
B. S. SHARMA
Keyword(s):  
Debye Temperature ◽  
High Temperatures ◽  
Volume Ratio ◽  
Grüneisen Parameter ◽  
Gruneisen Parameter ◽  
Volume Dependence

We derive a relation for computing volume dependence of entropy at selected isotherms. This formula is based on the Al'tshuler et al. model (J. Appl. Mech. Tech. Phys.28 (1987) 129) for volume dependence of Grüneisen parameter. The formula for entropy obtained in the present study has been used to determine the results for MgO down to a volume ratio 0.50 at selected isotherms. The obtained results for entropy present a general agreement with those calculated by Cynn et al. (J. Phys. Chem.99(9) (1995) 7813). We also formulate a relationship between Debye temperature and entropy. And it is found that Debye temperature increases exponentially as entropy decreases.

Elastic and Thermal Properties of SrCo1-xScxO3-δ

2014 ◽  
Vol 975 ◽  
pp. 283-287
Author(s):  
Rasna Thakur ◽  
Rajesh K. Thakur ◽  
N.K. Gaur
Keyword(s):  
Thermal Properties ◽  
Specific Heat ◽  
Debye Temperature ◽  
Elastic Constants ◽  
Cohesive Energy ◽  
Second Order ◽  
Grüneisen Parameter ◽  
Gruneisen Parameter ◽  
Rigid Ion Model

We have investigated the elastic and thermal properties for perovskite SrCo1-xScxO3-d, by means of Modified Rigid Ion Model (MRIM). We have also computed the second order Elastic constants (SOECs) and their combinations. Besides we have reported the cohesive energy (f), Debye temperature (θD) and Gruneisen parameter (γ). The variation of specific heat (C) at temperature 15 K≤x≤1000 K is computed for SrCo1-xScxO3-d. The computed properties reproduce well with the available data in literature.

The Debye temperature and Grüneisen parameter of the CaLa2S4-La2S3 system

2002 ◽  
Vol 44 (6) ◽  
pp. 1067-1070 ◽  
Author(s):  
S. M. Luguev ◽  
N. V. Lugueva ◽  
Sh. M. Ismailov
Keyword(s):  
Debye Temperature ◽  
Grüneisen Parameter ◽  
Gruneisen Parameter
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