Journal of Pure and Applied Ultrasonics

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Ultrasonic Characterization of Intermetallic Compounds


Affiliations
1 Department of Physics B.S.N.V.P.G. College, Charbagh, Lucknow-226 001,, India
2 Department of Physics, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, Veer Bahadur Singh Purvanchal University, Jaunpur-222 003,, India
 

A simple interaction potential model has been established to calculate the higher order elastic constants of the intermetallic compounds NdS, NdSe, NdTe in the temperature range from 100-500 K. The ultrasonic velocity, Debye average velocity, thermal relaxation time and acoustic coupling constant are calculated using the higher order elastic constants and other related parameters. Ultrasonic attenuation due to phonon-phonon interaction and thermoelastic loss are studied as a function of temperature along <111> direction. Important characteristic features well connected to the acoustical parameters are discussed.

Keywords

Ultrasonic Propagation, Elastic Constants, Intermetallics
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  • Ultrasonic Characterization of Intermetallic Compounds

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Authors

Arvind Kumar Tiwari
Department of Physics B.S.N.V.P.G. College, Charbagh, Lucknow-226 001,, India
Giridhar Mishra
Department of Physics, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, Veer Bahadur Singh Purvanchal University, Jaunpur-222 003,, India
P. K. Dhawan
Department of Physics, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, Veer Bahadur Singh Purvanchal University, Jaunpur-222 003,, India
Devraj Singh
Department of Physics, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, Veer Bahadur Singh Purvanchal University, Jaunpur-222 003,, India

Abstract


A simple interaction potential model has been established to calculate the higher order elastic constants of the intermetallic compounds NdS, NdSe, NdTe in the temperature range from 100-500 K. The ultrasonic velocity, Debye average velocity, thermal relaxation time and acoustic coupling constant are calculated using the higher order elastic constants and other related parameters. Ultrasonic attenuation due to phonon-phonon interaction and thermoelastic loss are studied as a function of temperature along <111> direction. Important characteristic features well connected to the acoustical parameters are discussed.

Keywords


Ultrasonic Propagation, Elastic Constants, Intermetallics

References