Journal of Pure and Applied Ultrasonics

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Ultrasonic Wave Propagation through Calcium Oxide Single Crystal in High Temperature Range


Affiliations
1 Department of Physics, Rajkiya Mahila Snatakottar Mahavidhyalaya, Banda-210001, India
2 Department of Physics, Bundelkhand University, Jhansi-284001, India
3 Department of Physics, B.N. P.G. College, Rath, Hamirpur-210431, India
 

The calcium oxide crystal possesses well developed fcc structure and is divalent in nature. Oxides and silicates make up the bulk of the Earth's mantle and crust, and thus it is important to predict their behavior for the study of seismic and volcanic activities. The second order elastic constants (SOECs) were computed using Coulomb and Born-Mayer potential in the temperature range 100-1000 K. The ultrasonic velocities were calculated using these values of second order elastic constants and density ρ. In this study temperature dependent velocities in calcium oxide have been calculated along <100>, <110> and <111> crystallographic directions and the results are presented graphically and discussed in depth.

Keywords

Micro Structural Properties, Seismic and Volcanic Activities, Acoustic Wave Velocities, Second Order Elastic Constants.
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  • Ultrasonic Wave Propagation through Calcium Oxide Single Crystal in High Temperature Range

Abstract Views: 278  |  PDF Views: 11

Authors

Jitendra Kumar
Department of Physics, Rajkiya Mahila Snatakottar Mahavidhyalaya, Banda-210001, India
S. K. Shrivastava
Department of Physics, Bundelkhand University, Jhansi-284001, India
Kailash
Department of Physics, B.N. P.G. College, Rath, Hamirpur-210431, India

Abstract


The calcium oxide crystal possesses well developed fcc structure and is divalent in nature. Oxides and silicates make up the bulk of the Earth's mantle and crust, and thus it is important to predict their behavior for the study of seismic and volcanic activities. The second order elastic constants (SOECs) were computed using Coulomb and Born-Mayer potential in the temperature range 100-1000 K. The ultrasonic velocities were calculated using these values of second order elastic constants and density ρ. In this study temperature dependent velocities in calcium oxide have been calculated along <100>, <110> and <111> crystallographic directions and the results are presented graphically and discussed in depth.

Keywords


Micro Structural Properties, Seismic and Volcanic Activities, Acoustic Wave Velocities, Second Order Elastic Constants.