scholarly journals Isobaric Study of the Elastic Properties for Alkaline Earth Oxides under High Temperature

2011 ◽  
Vol 2011 ◽  
pp. 1-6
Author(s):  
Seema Gupta ◽  
S. P. Singh ◽  
S. C. Goyal
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Elastic Properties ◽  
Alkaline Earth ◽  
Effect Of Temperature ◽  
High Pressure High Temperature ◽  
Anharmonic Term ◽  
Logarithmic Series ◽  
Temperature Equation ◽  
Good Agreement

A simple and straightforward theoretical model is developed to investigate the elastic properties of alkaline earth oxides under the effect of temperature as well as pressure. The calculation is performed with the help of high pressure-high temperature equation of state based on thermodynamic analysis. The anharmonic term arising due to thermal expansion has been taken into account in the expansion of logarithmic series of the thermodynamic data. The results obtained for alkaline earth oxides are discussed and compared with experimental data under the combined effect of high temperature and high pressure. The results are found to be in good agreement with available experimental results.

TEMPERATURE DEPENDENCE OF ELASTIC CONSTANTS OF ALKALINE EARTH OXIDE SOLIDS

2013 ◽  
Vol 22 ◽  
pp. 397-403
Author(s):  
S. P. SINGH
Keyword(s):  
Experimental Data ◽  
High Temperature ◽  
Theoretical Model ◽  
Equation Of State ◽  
Elastic Constants ◽  
Alkaline Earth ◽  
Effect Of Temperature ◽  
Alkaline Earth Oxide ◽  
Temperature Equation ◽  
Good Agreement

A simple and straightforward theoretical model is developed to investigate the elastic constants of alkaline earth oxide solids under the effect of temperature. The calculation are performed with the help of high temperature equation of state (EOS) derived from Tallon's method based on thermodynamic analysis. The results obtained for these solids are discussed and compared with experimental data under the effect of high temperature. The results are found to be in good agreement with available experimental results

High-pressure–high-temperature equation of state of KCl and KBr

2012 ◽  
Vol 85 (21) ◽  
Author(s):  
A. Dewaele ◽  
A. B. Belonoshko ◽  
G. Garbarino ◽  
F. Occelli ◽  
P. Bouvier ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Equation Of State ◽  
High Pressure High Temperature ◽  
Temperature Equation

NANOMATERIALS UNDER HIGH TEMPERATURE AND HIGH PRESSURE

2010 ◽  
Vol 24 (26) ◽  
pp. 2647-2657 ◽  
Author(s):  
R. KUMAR ◽  
UMA D. SHARMA ◽  
MUNISH KUMAR
Keyword(s):  
Experimental Data ◽  
High Pressure ◽  
Thermal Expansion ◽  
High Temperature ◽  
Constant Pressure ◽  
Effect Of Temperature ◽  
Effect Of Pressure ◽  
Approaches To Study ◽  
Theory And Experiment ◽  
Good Agreement

Two different approaches to study thermal expansion and compression of nanosystems are unified, which have been treated quite independently by earlier workers. We provide the simple theoretical analysis, which demonstrates that these two approaches may be unified into a single theory, viz. one can be derived from other. It is concluded that there is a single theory in the place of two different approaches. To show the real connection with the nanomaterials, we study the effect of temperature (at constant pressure), the effect of pressure (at constant temperature) as well as the combined effect of pressure and temperature. We have considered different nanomaterials viz. carbon nanotube, AlN , Ni , 80 Ni –20 Fe , Fe – Cu , MgO , CeO 2, CuO and TiO 2. The results obtained are compared with the available experimental data. A good agreement between theory and experiment demonstrates the validity of the present approach.

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