Journal of Pure and Applied Ultrasonics

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Elastic and Ultrasonic Properties of LaPn (Pn=N, P, As, Sb, Bi)


Affiliations
1 Department of Physics, Ravenshaw University, Cuttack-753003, India
2 Department of Applied Physics, Amity School of Engineering and Technology, Bijwasan, New Delhi-110061, India
 

Elastic and ultrasonic properties of lanthanum pnictides (LaPn) have been investigated along <100>, <110>, <111> directions in the temperature range 100K to 300K. The second and third order elastic constants (SOECs and TOECs) have been computed using Coulomb and Born-Mayer potential using nearest neighbour distance and hardness parameter. Other parameters like Young's modulus, bulk modulus, shear modulus, Zener anisotropic factor, Poisson's ratio, toughness to fracture (G/B) ratio have also been found out for the future performance of LaPn. Additionally ultrasonic velocity has been evaluated with use of SOECs and TOECs. Obtained results are discussed in correlation with available mechanical and thermophysical properties of these materials.

Keywords

Lanthanum Monopnictides, Elastic Properties, Ultrasonic Properties.
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  • Elastic and Ultrasonic Properties of LaPn (Pn=N, P, As, Sb, Bi)

Abstract Views: 272  |  PDF Views: 8

Authors

Chinmayee Tripathy
Department of Physics, Ravenshaw University, Cuttack-753003, India
Devraj Singh
Department of Applied Physics, Amity School of Engineering and Technology, Bijwasan, New Delhi-110061, India
Rita Paikaray
Department of Physics, Ravenshaw University, Cuttack-753003, India

Abstract


Elastic and ultrasonic properties of lanthanum pnictides (LaPn) have been investigated along <100>, <110>, <111> directions in the temperature range 100K to 300K. The second and third order elastic constants (SOECs and TOECs) have been computed using Coulomb and Born-Mayer potential using nearest neighbour distance and hardness parameter. Other parameters like Young's modulus, bulk modulus, shear modulus, Zener anisotropic factor, Poisson's ratio, toughness to fracture (G/B) ratio have also been found out for the future performance of LaPn. Additionally ultrasonic velocity has been evaluated with use of SOECs and TOECs. Obtained results are discussed in correlation with available mechanical and thermophysical properties of these materials.

Keywords


Lanthanum Monopnictides, Elastic Properties, Ultrasonic Properties.