The temperature-dependent electrical transport properties of liquid Sn using pseudopotential theory

Patel, A. B.; Bhatt, N. K.; Thakore, B. Y.; Vyas, P. R.; Jani, A. R.

doi:10.1080/00268976.2013.877169

Cited by 18 publications

(14 citation statements)

References 29 publications

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“…The effect of electron-electron collisions in the twotemperature electron thermal conductivity is taken into account in accordance with the modification [40] of the approach [38], where the loss of conducting properties is considered due to the increasing losses for thermoelectric phenomena at T e = 30 000 -50 000 K. The form, proposed by Lindhard, is used to describe the electronic screening. The final expression for the contribution of s-s collisions (in s −1 ) to the total effective frequency of electron collisions has the form: Using the Drude model, The processing of the experimental data [41,42] using the Drude model yielded the following estimation the effective frequency of electronion collisions of tin:…”

Section: Appendix A: Electron-ion Exchange Coefficients and Electronimentioning

confidence: 99%

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Expansion and Fragmentation of a Liquid-Metal Droplet by a Short Laser Pulse

et al. 2018

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We report an experimental and numerical investigation of the fragmentation mechanisms of micrometer-sized metal droplet irradiated by ultrashort laser pulses. The results of the experiment show that the fast one-side heating of such a droplet may lead to either symmetric or asymmetric expansion followed by different fragmentation scenarios. To unveil the underlying processes leading to fragmentation we perform simulation of liquid-tin droplet expansion produced by the initial conditions similar to those in experiment using the smoothed particle hydrodynamics (SPH) method. Simulation demonstrates that a thin heated surface layer generates a ultrashort shock wave propagating from the frontal side to rear side of the droplet. Convergence of such shock wave followed by a rarefaction tale to the droplet center results in the cavitation of material inside the central region by the strong tensile stress. Reflection of the shock wave from the rear side of droplet produces another region of highly stretched material where the spallation may occur producing a thin spallation layer moving with a velocity higher than expansion of the central shell after cavitation. It is shown both experimentally and numerically that the threshold laser intensity necessary for the spallation is higher than the threshold required to induce cavitation in the central region of droplet. Thus, the regime of asymmetrical expansion is realized if the laser intensity exceeds the spallation threshold. The transverse and longitudinal expansion velocities obtained in SPH simulations of different regimes of expansion are agreed well with our experimental data. * grigorev@phystech.edu †

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Section: Appendix A: Electron-ion Exchange Coefficients and Electronimentioning

confidence: 99%

“…Using the Drude model, The processing of the experimental data [41,42] using the Drude model yielded the following estimation the effective frequency of electronion collisions of tin:…”

Section: Appendix A: Electron-ion Exchange Coefficients and Electroni...mentioning

confidence: 99%

Expansion and Fragmentation of a Liquid-Metal Droplet by a Short Laser Pulse

et al. 2018

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“…3. Плотность ρ, кг/м 3 7850 [11] 7310 [11] 1870 [12] 7740 [14] Удельная изобарная теплоемкость C p , Дж/(кг•К) 449 [13] 230 [13] 714 [15] 4620 [14] Коэффициент теплового расширения α•10 -6 , 1/К 11,5 [11] 23,4 [11] 4 [16] 14 [14] Модуль Юнга E Y , ГПа 212 [11] 48,3 [ 3. Values of current density for given values of potential difference Сопоставление результатов данных сканирующей электронной микроскопии и энергодисперсионной рентгеновской спектроскопии с данными моделирования позволило удостовериться в обоснованности полученных результатов.…”

Section: основные результаты моделированияunclassified

“…Для описания температурных зависимостей коэффициентов тепло-и электропроводности использованы данные [13][14][15][16][17][18][19]. Значения коэффициентов диффузии железа и олова, и температурные зависимости взяты из работ [20,21].…”

Section: Introductionunclassified

Simulation of diffusion processes during electrothermal treatment of reaction crucibles of the Fe-Sn system

Fomin¹,

Tukmakova²,

Bolkunov³

et al. 2023

Naučno-teh. vestn. inf. tehnol. meh. opt.

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The diffusion processes regularity in the reaction crucibles of the iron-tin system during their electrothermal treatment was studied by the numerical simulation methods. The effect of current density and temperature on the processes of heat and mass transfer in the reaction zone has been studied. Numerical simulation was performed by the finite element method. The developed model includes mechanical, thermal, electrical and chemical processes during the electrothermal treatment of the iron-tin system in the reaction crucible, taking into account the distribution of components under various processing conditions of the reaction crucible. A comparative analysis of the calculated data on the diffusion of tin into iron under conditions of long-term exposure to high temperatures without the application of an electric voltage and when the reaction zone is heated by passing a high-density electric current is performed. A picture of the distribution of mass fractions of components depending on the type of impact is obtained. The penetration depth of the interacting components was determined and the intensity of the mass transfer processes was assessed. The regularities of heat and mass transfer in the system of iron and tin with a change of the process initial parameters are established. The model was verified by comparing the simulation results with the data of full-scale experiments on control samples. The research results can be used to predict the conditions for obtaining new functional materials.

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“…They are found to be highly successful in nearly-free-electron (NFE) systems like alkalis and alkaline metals in examining electrical, thermodynamic, and structural properties. [21][22][23][24][25] Few attempts have been made for transition and rare-earth liquid metals. [26][27][28][29] The major complication is treating sp-d-f hybridization of electrons with core-shell electrons and proximity of Fermi energy to valence electrons.…”

Section: Introductionmentioning

confidence: 99%

Structural and mass transport properties of liquid ytterbium in the temperature range 1123 K–1473 K

2023

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We have studied structural and atomic transport properties for liquid f-shell ytterbium in a temperature range 1123–1473 K. Pair interactions among atoms are derived using a local pseudopotential. The potential parameters are fitted to the phonon dispersion curve at room temperature. The local pseudopotential used in the present study is computationally more efficient with only three parameters, and it is found to be transferable to the liquid phase without changing the parameters. Since computed various properties agree with reported theoretical and experimental findings; the adopted fitting scheme is justified. As a significant outcome of the study, we find that (i) the melting in Yb is governed by the Lindemann’s law, (ii) the mass transport mechanism obeys the Arrhenius law, (iii) the role of three particle correlation function for deriving the velocity autocorrelation function is little, (iv) the mean-square atomic displacement is more sensitive to the choice of interaction potential than the other bulk properties, and (v) the liquid Yb does not show liquid-liquid phase transition within the studied temperature range. Further, due to a good description of the structural and mass transport properties, we propose that Yb remains divalent at reduced density.

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The temperature-dependent electrical transport properties of liquid Sn using pseudopotential theory

Cited by 18 publications

References 29 publications

Expansion and Fragmentation of a Liquid-Metal Droplet by a Short Laser Pulse

Expansion and Fragmentation of a Liquid-Metal Droplet by a Short Laser Pulse

Simulation of diffusion processes during electrothermal treatment of reaction crucibles of the Fe-Sn system

Structural and mass transport properties of liquid ytterbium in the temperature range 1123 K–1473 K

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