Ultrasonic study of Laves phase compounds ScOs2 and YOs2

Yadav, Chandreshvar Prasad; Pandey, Dharmendra Kumar; Singh, Devraj

doi:10.1007/s12648-019-01389-8

Cited by 18 publications

(10 citation statements)

References 30 publications

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“…Further, orientation-dependent ultrasonic behavior is anomalous due to the combined effect of second-order elastic constants and density. Similar nature of the angle-dependent ultrasonic velocity is also reported for other hexagonal structured materials [35,36]. The Debye average velocity (V D ) variation with the angle is displayed in Fig.…”

Section: Ultrasonic Velocity and Allied Constraintssupporting

confidence: 81%

Temperature-Dependent Ultrasonic Properties of Semiconducting M2CO2 (M= Ti, Zr, Hf) MXenes

et al. 2022

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Here, we have studied the elastic, ultrasonic, mechanical, and thermal behavior of temperature-dependent hexagonal oxygen-functionalized M2CO2 (M= Ti, Zr, Hf) MXenes. The higher-order linear and nonlinear elastic constants, viz., second-order (SOECs), and third-order (TOECs) have been computed using the Lenard Jones interaction potential model. For mechanical characterization, bulk modulus (B), shear modulus (G), Young's modulus (Y), Pugh's ratio (B / G), Poisson's ratio, and anisotropic index are evaluated using SOECs. Born's stability and Pugh's criteria are used to examine the nature and strength of the MXenes in all the temperatures. For the investigation of anisotropic behavior and its thermophysical properties, temperature-dependent ultrasonic velocities and thermal relaxation time have been calculated along with different orientations from the unique axis of the crystal. The ultrasonic attenuation (UA) of a longitudinal and shear wave due to phonon-phonon (p-p) interaction and thermoelastic relaxation mechanism were investigated for these oxygen-functionalized MXenes. Thermal conductivity is a principal contributor to the behavior of UA due to p-p interactions. Our analysis suggests that semiconductor Ti2CO2 MXenes show superior mechanical properties to other oxygen-functionalized MXenes. Computed elastic, ultrasonic, and thermal properties are correlated to evaluate the microstructural behavior of the materials useful for industrial applications.

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Section: Ultrasonic Velocity and Allied Constraintssupporting

confidence: 81%

Temperature-Dependent Ultrasonic Properties of Semiconducting M2CO2 (M= Ti, Zr, Hf) MXenes

et al. 2022

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“…It is clear that VD increases with the angle and reaches maximum at 55 0 . The calculation of VD involves the velocities VL, VS1 and VS2 [40,41]. It is understandable that the difference of VD is affected by the constituent ultrasonic velocities.…”

Section: Ultrasonic Velocity and Ultrasonic Allied Parametersmentioning

confidence: 99%

Elastic, Mechanical and Thermophysical properties of Single-Phase Quaternary ScTiZrHf High-Entropy Alloy

Rai

Chaurasiya

Yadawa

2021

Phys. Chem. Solid St.

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Consequent to the interaction potential model, the high-order elastic constants at high entropy alloys in single-phase quaternary ScTiZrHf have been calculated at different temperatures. Elastic constants of second order (SOECs) helps to determine other ultrasonic parameters. With the help of SOECs other elastic moduli, bulk modulus, shear modulus, Young’s modulus, Pugh’s ratio, elastic stiffness constants and Poisson’s ratio are estimated at room temperature for elastic and mechanical characterization. The other ultrasonic parameters are calculated at room temperature for elastic and mechanical characterization. The temperature variation of ultrasonic velocities along the crystal's z-axis is evaluated using SOECs. The temperature variation of the average debye velocity and the thermal relaxation time (τ) are also estimated along this orientation axis. The ultrasonic properties correlated with elastic, thermal and mechanical properties which is temperature dependent is also discussed. The ultrasonic attenuation due to phonon – phonon (p-p) interactions is also calculated at different temperatures. In the study of ultrasonic attenuation such as a function of temperature, thermal conductivity appears to be main contributor and p- p interactions are the responsible reason of attenuation and found that the mechanical properties of the high entropy alloy ScTiZrHf are superior at room temperature.

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“…B/G and 'σ' are the measure of brittleness and ductility of solid. If σ = 0.228 ≤ 0.26 and B/G = 1.51≤1.75, the solid is generally brittle, otherwise it is ductile in nature [28,29]. Our finding of lower values of B/G and σ compared to their critical values indicates that chosen ternary compound are brittle in nature at room temperature.…”

Section: Results and Discussion 21 Higher Order Elastic Constantsmentioning

confidence: 64%

“…3, a, b, c). No correlation is found for the change in the content of both phases, which can imply that a high-temperature magnetic phase is formed mainly due to non-magnetic inclusions [29,30].…”

Section: Resultsmentioning

confidence: 85%

“…It is clear that thermal relaxation time for intermetallic GdFeAl ternary material is mostly affected by 'k'. Thermal relaxation time 'τ' for hexagonally type structured compounds is of order at picoseconds [29,30,31]. Therefore, the calculated 'τ' explains the hexagonal structure of intermetallic GdFeAl ternary compound.…”

Section: Ultrasonic Velocity and Allied Parametersmentioning

confidence: 90%

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2022

Eurasian phys. tech. j.

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Dear authors and readers! Dear Colleagues!It's already becoming a tradition to inform our readers with most important achievements of the "Eurasian Physical Technical Journal".Since 2019, Eurasian phys. tech. j. has been indexed in the Scopus database and has a ranking in the SJRplatform (SCImago Journal and Country Rank). We are proud that on the SJR-platform our Journal is included in the Q3 quartile on Energy and Engineering -http://www.scimagojr.com/journalsearch.php?q=211009 20795&tip=sid&clean=0The Open Access "Eurasian Physical Technical Journal status provides free access to published full-text articles in PDF format, in addition to domestic databases of electronic libraries and on the EBSCO website.We also invite you to take part in the work of the 12th International Scientific Conference "Chaos and Structures in Nonlinear Systems. Theory and Experiment", which will be held on June 17-19, 2022 on the basis of the Toraigyrov University (Pavlodar, Kazakhstan). The conference sections:1. Dynamic chaos, self-organization in nonlinear systems, in astrophysics, in condensed environments. 2. Energy, automation and telecommunications.3. Information technologies and methodological problems in the development of modern society and education.4. Innovative technologies, achievements and development prospects in engineering. 5. Ecology and safety in the technosphere: contemporary problems and solutions As part of the conference, it's planned to leave the participants to the picturesque Bayanaul, located on the shore of Lake Sabyndykol. Detailed information is available at https://sci-conf.tou.edu.kz /index.php?lang=rus Publication of articles in Open Access according to the Gold Open Access model means unlimited and free access is available, it's absolutely free of charge for readers and all interested persons. To compensate for the editing, reviewing and publishing processes cost of an author's fee (Open Access Fee) is charged. Payment details are on the site.In this issue, readers can find articles aimed at solving modern topical problems of technical physics. On behalf of the editorial board of the Eurasian Physical and Technical Journal, I express my sincere gratitude to our experts who took the time to review the articles submitted to the journal. Without their highly professional work and patience, this release would not have been possible.We hope that the proposed scientific works will interest our readers. I'll be glad to see you among our authors of the next issues.Best regards, ch. editor, prof. Saule Sakipova

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Ultrasonic study of Laves phase compounds ScOs2 and YOs2

Cited by 18 publications

References 30 publications

Temperature-Dependent Ultrasonic Properties of Semiconducting M<sub>2</sub>CO<sub>2</sub> (M= Ti, Zr, Hf) MXenes

Temperature-Dependent Ultrasonic Properties of Semiconducting M<sub>2</sub>CO<sub>2</sub> (M= Ti, Zr, Hf) MXenes

Elastic, Mechanical and Thermophysical properties of Single-Phase Quaternary ScTiZrHf High-Entropy Alloy

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