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Temperature and Orientation Dependence of Ultrasonic Parameters in Americium Monopnictides

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DOI: 10.4236/ampc.2011.12006    4,480 Downloads   8,723 Views   Citations

ABSTRACT

The temperature dependence of the ultrasonic parameters like ultrasonic velocities and Grüneisen parameters in americium monopnictides AmY (Y: N, P, As, Sb and Bi) have been studied for longitudinal and shear waves along <100>, <110> and <111> crystallographic directions in the temperature range 100 K - 500 K. The second- and third- order elastic constants have also been evaluated for these monopnictides using Coulomb and Born-Mayer potential. The values of elastic constants are the highest for AmN. Hence the mechanical properties of AmN are better than other monopnictides AmP, AmAs, AmSb and AmBi. Ultrasonic velocity is found large for AmP. So the ultrasonic wave propagation will be much better than others in AmP. Obtained results are compared with available results of same type of materials.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

D. Singh, R. Kumar and D. Pandey, "Temperature and Orientation Dependence of Ultrasonic Parameters in Americium Monopnictides," Advances in Materials Physics and Chemistry, Vol. 1 No. 2, 2011, pp. 31-38. doi: 10.4236/ampc.2011.12006.

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