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Dhawan, P. K.
- Effect of Electrical Resistivity on Ultrasonic Attenuation in FeSe Single Crystal at Low Temperature
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Authors
Affiliations
1 Department of Physics, University of Allahabad, Allahabad-211002, IN
2 Department of Physics, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, V.B.S. Purvanchal University, Jaunpur- 222003, IN
1 Department of Physics, University of Allahabad, Allahabad-211002, IN
2 Department of Physics, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, V.B.S. Purvanchal University, Jaunpur- 222003, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 41, No 3 (2019), Pagination: 69-73Abstract
The ultrasonic attenuation and velocities following electron viscosity mechanism has been computed in semi-metallic, superconducting single crystal Iron Selenide(FeSe) in low temperatures 10-70K. We have also calculated the electron-viscosity at different low temperature needed for the calculation of ultrasonic attenuation. The behaviour of ultrasonic attenuation is quite similar to its inverse electrical resistivity. The ultrasonic attenuation due to electron viscosity mechanism is most significant at 15 K. Computed results of ultrasonic parameters have been discussed.Keywords
Elastic Constant, Electrical Resistivity, Superconductor, Ultrasonic Attenuation.Full Text
References
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- Zvyagina G.A., Gaydamak T.N., Zhekov K.R., Bilich I.V., Fil V.D., Chareev D.A. and Vasiliev A.N., Acoustic characteristics of FeSe single crystals, Alett. J. Explor. Front. Phys. 101 (2013) 56005-56009.
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- Subedi A., Density functional study of FeS, FeSe, and FeTe: Electronic structure, magnetism, phonons, and superconductivity, Phys. Rev. B78 (2008) 134514-134520.
- Yadav R.R. and Singh D., Behaviour of ultrasonic attenuation in intermetallics. Intermetallics. 9 (2001) 189-194.
- Kor S.K., Kailash , Shanker K. and Mehrotra P., Behaviour of acoustical phonons in metals in low temperature region. J. Phys. Soc. Jpn. 56 (1987) 2428-2432.
- Kor S.K., Pandey G. and Singh D., Ultrasonic attenuation in semi-metallic GdX single crystals (X = P, As, S bans Bi) in the temperature range 10 to 300 K. Indian J. Pure Appl. Phys. 39 (2001) 510-513.
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- Poker D.B. and Klabunde C.E., Temperature dependence of electrical resistivity of vanadium, platinum, and copper, Phys. Rev. B. 26 (1982) 7012-7014.
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- Yadav R.R., Tiwari A.K. and Singh D., Effect of pressure on ultrasonic attenuation in Ce monopnictides at low temperatures, J. Mater. Sci. 40 (2005) 5319-5321.
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- Ultrasonic Characterization of Intermetallic Compounds
Abstract Views :141 |
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Authors
Affiliations
1 Department of Physics B.S.N.V.P.G. College, Charbagh, Lucknow-226 001,, IN
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,, IN
1 Department of Physics B.S.N.V.P.G. College, Charbagh, Lucknow-226 001,, IN
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,, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 43, No 3-4 (2021), Pagination: 56-60Abstract
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, IntermetallicsFull Text
References
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- Asian J. Chem., 24 (2012) 5652-5654.
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- Verma A. K., Kaushik S., Singh D. and Yadav R. R., Elastic and thermal properties of carbides of U, Pu, and Am, J. Phys. Chem. Solids 133 (2019) 21-27.
- Bhalla V., Singh D. and Jain S. K., Mechanical and thermophysical properties of rare-earth monopnictides, Int. J. Comput. Mater. Sci. Eng. 05 (2016) 1650012.