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Tiwari, Arvind Kumar
- Temperature Dependent Acoustical Behaviour of Ir and Rh Metals
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Authors
Affiliations
1 Department of Physics, B.S.N.V.P.G. College, Lucknow-226001, IN
1 Department of Physics, B.S.N.V.P.G. College, Lucknow-226001, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 39, No 2 (2017), Pagination: 40-42Abstract
The Coulomb and Born-Mayer potential was applied to evaluate the second and third order elastic constants of Ir and Rh metals at 273.2 K, 298.2 K and 373.2 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. Contribution of these parameters to the total attenuation is studied. It is found that significant contribution to the total attenuation occurs due to phonon-phonon interaction. The attenuation due to thermoelastic loss is negligible compared to phonon-phonon interaction, establishing that the major part of energy from sound wave is removed due to interaction with thermal phonons.Keywords
Ultrasonic Properties, Thermoelastic Relaxation, Thermal Conductivity, Akhieser Loss.Full Text
References
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- Jaykumar T. and Kumar A., Characterization of metallic materials through elastic properties, J. Pure Appl. Ultrason., 36 (2014) 29-35.
- Born M. And Mayer J.E., Zur Gitterthorie der Ionenkristalle, Z. Phys., 75 (1931) 1-18.
- Brugger K., Thermodynamic definition of higher order elastic coefficients, Phy. Rev., 133 (1964) A1611-A1612.
- Mori S. and Hiki Y., Calculation of third and fourth order elastic constants of alkali halide crystals, J. Phys. Soc. Jpn., 45 (1975) 1449-1456.
- Ghate P.B., Third order elastic constants of alkali halide crystals, Phys. Rev., 139 (1965) A 1666-A1674.
- Mason W.P., Physical Acoustics, Academic Press, New York, IIIB (1965) p. 237.
- Gupta A.K., Gupta A., Tripathi S., Bhalla V. and Singh D., Ultrasonic properties of hexagonal closed packed metals, Universal J. Mat. Sc., 1 (2013) 63-68.
- Yadav R.R., Singh D. and Tiwari A.K., Ultrasonic evaluations in rare-earth metals, J. Acoust. Soc. Ind., 30 (2002) 59-63.
- Ultrasonic Attenuation in NbO at Higher Temperature Phase
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Authors
Affiliations
1 Department of Physics, B. S. N. V. P. G. College, Lucknow-226001, IN
1 Department of Physics, B. S. N. V. P. G. College, Lucknow-226001, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 36, No 4 (2014), Pagination: 76-79Abstract
Ultrasonic attenuation for the longitudinal and shear waves due to phonon-phonon interaction and thermoelastic mechanism have been evaluated in NbO along <100> and <111> crystallographic directions in the temperature range 100-500K. The second-and third order elastic constants are also evaluated for the evaluation of ultrasonic attenuation and other associated parameters like Grüneisen parameters and acoustic coupling constants. The ultrasonic attenuation due to phonon-phonon interaction is predominant over thermoelastic loss in this material. The obtained results are discussed in correlation with thermoelastic properties of NbO.Keywords
Elastic Constants, Ultrasonic Velocity, Thermal Conductivity, Ultrasonic Attenuation.Full Text
- Ultrasonic Attenuation in Intermetallics HfX(X=Os, Ir and Pt)
Abstract Views :214 |
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Authors
Affiliations
1 University School of Information, Communication and Technology, Guru Gobind Singh Indraprastha University, Dwarka Sector 16C, New Delhi-110078, IN
2 Department of Physics, Professor Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study & Research, Veer Bahadur Singh Purvanchal University, Jaunpur-222003, U.P., IN
3 Department of Physics, Bappa Sri Narain Vocational P.G. College (KKV), Charbagh, Lucknow-226001, U.P., IN
4 Amity Institute of Nanotechnology, Amity University Uttar Pradesh, Noida-201313, U.P., IN
1 University School of Information, Communication and Technology, Guru Gobind Singh Indraprastha University, Dwarka Sector 16C, New Delhi-110078, IN
2 Department of Physics, Professor Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study & Research, Veer Bahadur Singh Purvanchal University, Jaunpur-222003, U.P., IN
3 Department of Physics, Bappa Sri Narain Vocational P.G. College (KKV), Charbagh, Lucknow-226001, U.P., IN
4 Amity Institute of Nanotechnology, Amity University Uttar Pradesh, Noida-201313, U.P., IN
Source
Journal of Pure and Applied Ultrasonics, Vol 42, No 2 (2020), Pagination: 46-51Abstract
Ultrasonic study of B2 -structured hafnium based compounds HfX(X=Os, Ir and Pt) along direction were evaluated at room temperature. Initially, the Coulomb and Born-Mayer potential model was used to find out the higher order elastic constants of HfX at room temperature. We have used the second order elastic constants (SOECs) to compute the mechanical properties such as bulk modulus, Young's modulus, shear modulus, Pugh's ratio, Poisson's ratio, Zener anisotropic factor, Vicker's hardness, Lame's modulus of chosen materials. Further, the SOECs and third order elastic constants (TOECs) were applied to compute ultrasonic velocities and Debye temperature. The thermal conductivity and thermal relaxation time of chosen monopnictides compounds have also been computed at room temperature. We have found that HfOs is strongest and most fit material for crystallographic study in B2 phase. In addition to above evaluated parameters, energy density, specific heat per unit volume, thermal conductivity, acoustic coupling constants and ultrasonic attenuation for longitudinal and shear modes propagation along direction have been estimated. The ultrasonic attenuation was least in case of HfOs. Obtained results have been discussed and justified with available findings for their future prospects.Keywords
Elastic Constants, Mechanical Properties, Thermal Conductivity, Ultrasonic Attenuation.Full Text
References
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- Ghate P.B.,Third order elastic constants of alkali halide crystals, Phys. Rev. 139(1965) A1666-A1674.
- Bala J.and Singh D.,Elastic and ultrasonic properties of fermium monopnictides, Eng. Appl. Sci Res. 47(2020) 182-187.
- Leibfried G.and Ludwig W.,Theory of anharmonic effects in crystals: In Solid State Physics: Advances in Research and Applications, Eds.: Seitz F.and Turnbull D., Academic Press, New York, 12(1961) 275-444.
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- Bömmel H.E.and Dransfeld K.,Excitation and attenuation of hypersonic waves in quartz, Phys. Rev. 117 (1960) 1245-1252.
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- Liu Q., Zhang N., Liu F.and Liu Z.,Structural, mechanical and electronic properties of OsTM and TMOs2 (TM = Ti, Zr and Hf): First-principles calculations. J. Alloys Compd. 589(2014) 278-282.
- Mouhat F.and Coudert F.,Necessary and sufficient elastic stability conditions in various crystal systems, Phys. Rev. B 90(2014) 224104 (4 pp.).
- Bala J., Singh D., Pandey D.K.and Yadav C.P., Mechanical and thermophysical properties of ScM (M: Ru, Rh, Pd, Ag) intermetallics, Int. J. Thermophys. 41 (2020) 46 (13 pp.).
- Singh D., Tripathy C., Paikaray R., Mathur A.and Wadhwa S.,Behaviour of ultrasonic properties on SnAs, InTe and PbSb. Eng. Appl. Sci. Res., 46(2019) 98-105.
- Pandey D.K.and Yadav C.P.,Thermophysical and ultrasonic properties of GdCu under the effect of temperature and pressure, Phase Trans., 93(2020) 338-349.
- Yadav C.P., Pandey D.K.and Singh D.,Elastic and ultrasonic studies on RM (R = Tb, Dy, Ho, Er, Tm; M = Zn, Cu) compounds, Z. Naturforsch. A 74(2019) 1123-1130.
- Ultrasonic Characterization of Intermetallic Compounds
Abstract Views :168 |
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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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- Elmore P. A. and Breazeale M. A., Dispersion and frequency dependent nonlinearity parameters in a graphite-epoxy composite, Ultrasonics, 41 (2004) 709718.
- Singh D. and Yadav R. R., The thermal conductivity and ultrasonic absorption in dielectric crystals, J. Pure Appl. Ultrason. 25 (2003) 82-87.
- Singh D., Behaviour of acoustic attenuation in rare-earth chalcogenides, Mater. Chem. Phys. 115 (2009) 65-68.
- Zhuze V. P., Golubkov A. V., Goncharova E. V. and Sergeeva V. M., Electric properties of rare-earth monochalcogonides (cerium subgroup), Sov. Phys. Solid State 6 (1964) 257-267.
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- Brugger K., Thermodynamic definition of higher order elastic coefficients, Phys. Rev. 133 (1964) A1611-A1612.
- Born M. and Mayer J. E., Zur Gittertheorie der Ionenkristalle, Zeitschrift Für Phys. 75 (1932) 1-18.
- Leibfried G. and Hahn H., Zur temperaturabhängigkeit der elastischen konstanten von alkalihalogenidkristallen, Z. Phys. 150 (1958) 497-525.
- Leibfried G. and Ludwig W., Theory of anharmonic effects in crystals, In: Solid State Physics, Edited by Seitz F, Turnbull D, Academic Press, New York, 12 (1964).
- Ghate P. B., Third-order elastic constants of alkali halide crystals, Phys. Rev. 139 (1965) A1666-A1674.
- Mori S. and Hiki Y., Calculation of the third- and fourthorder elastic constants of alkali halide crystals, J. Phys. Soc. Japan 45 (1978) 1449-1456.
- Singh D., Mishra G., Kumar R. and Yadav R. R., Temperature dependence of elastic and ultrasonic properties of sodium borohydride, Commun. Phys. 27 (2017) 151.
- Akhiezer A., On the absorption of sound in solids, J.Phys. 1 (1939) 277-287.
- Yadav R. R., Ultrasonic attenuation in CeAl3, J. Phys.Soc. Japan 55 (1986) 544-545.
- Yadav R. R. and Singh D., Ultrasonic attenuation in lanthanum monochalcogenides, J. Phys. Soc. Jpn. 70 (2001) 1825-1832.
- Kumar R., Singh D. and Tripathi S., Crystal anharmonicity in strontium monochalcogenides, In:
- Asian J. Chem., 24 (2012) 5652-5654.
- Singh D., Pandey D. K., Singh D. K. and Yadav R. R., Propagation of ultrasonic waves in neptunium monochalcogenides, Appl. Acoust. 72 (2011) 737-741.
- Singh D., Pandey D. K. and Yadawa P. K., Ultrasonic wave propagation in rare-earth monochalcogenides, Cent. Eur. J. Phys. 7 (2009) 198-205.
- 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.
- Concentration Dependence of Ultrasonic Attenuation in NaCl-NaCN Mixed Crystal System
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Authors
Affiliations
1 Department of Physics B.S.N.V.P.G. College, Charbagh Lucknow-226 001,, IN
1 Department of Physics B.S.N.V.P.G. College, Charbagh Lucknow-226 001,, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 43, No 3-4 (2021), Pagination: 61-64Abstract
The paper presents theoretical temperature dependent mechanical and thermophysical properties of mixed crystal system using ultrasonic analysis. The Coulomb and Born-Mayer potential was applied to evaluate the second and third order elastic constants of the material at the temperature range 100-500 K. The second order elastic constants are used to compute mechanical properties such as bulk modulus, shear modulus and Debye average velocity. Ultrasonic attenuation due to phonon-phonon interaction for longitudinal and shear wave and thermoelastic loss have been evaluated at these temperatures along <111> direction. The obtained results are discussed in correlation with available results on these properties for the chosen material.Keywords
US Propagation, Attenuation, Mixed CrystalsFull Text
References
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- Bommel H.E. and Dransfeld K., Excitation and attenuation of hypersonic waves in quartz, Phys. Rev. 117 (1960) 1245-1252.
- Mason W.P., Physical Acoustics. Academic Press New York, IIIB (1965).
- Born M. and Mayer J.E., Zur Gittertheorie der Ionenkristalle, Z. Phys. 75 (1931) 1-18.
- Brugger K., Generalized Gruneisen parameters in anisotropic Debye modei, Phys. Rev., 137 (1965) A1826A1827.
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- Mori S. and Hiki Y., Calculation of third and fourth order elastic constants of alkali halide crystals, J. Phys. Soc. Jpn., 45 (1975) 1449-1456.
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