The velocity of sound in the liquid S–Se alloy

Tsuchiya, Y.; Satoh, Ryu; Kakinuma, Fujio

doi:10.1016/s0022-3093(99)00127-1

Cited by 5 publications

(11 citation statements)

References 8 publications

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“…Note, that this assumption does not contradict with experimental results reported in Ref. [26], where depolymerization in liquid and supercooled Se was not found at temperatures down to 200°C.…”

Section: Methodssupporting

confidence: 81%

“…If the viscosities are similar, then one may assume that supercooled selenium undergoes a depolymerization transition under cooling, similar to that which occurs in liquid sulfur. (We remind, that depolymerization in sulfur is accompanied by a sharp increase of magnitude of the temperature derivative of the sound velocity [9,26].) Such a transition has been discussed theoretically by Eisenberg and Tobolsky [34].…”

Section: Methodsmentioning

confidence: 76%

“…In particular, molecular-dynamic simulations [25] suggest that the glass transition may be similar to a polymerization transition. If so, near the glass transition one expects to find a change in the slope of the temperature dependence of the sound velocity, as occurs in sulfur at the polymerization transition [9,11,26].…”

Section: Introductionmentioning

confidence: 99%

“…Data on sound velocity in selenium have been reported for the liquid state at temperatures up to 800°C [26,27], for supercooled liquid at temperatures down to 200°C [26], and for the glassy state at 25°C [28]. Sound velocity data are also available for liquid Se-Te [29] and S-Se [26] mixtures at temperatures up to about 800°C.…”

Section: Introductionmentioning

confidence: 99%

“…Sound velocity data are also available for liquid Se-Te [29] and S-Se [26] mixtures at temperatures up to about 800°C.…”

Section: Introductionmentioning

confidence: 99%

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Sound velocity in liquid and glassy selenium

Кожевников¹,

Payne²,

Olson³

et al. 2007

Journal of Non-Crystalline Solids

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The speed of longitudinal sound waves at 7 and 22 MHz has been measured in liquid, supercooled, and amorphous selenium, including the region around the glass transition temperature, T g , near 35°C. In amorphous selenium the speed of shear waves at 7 MHz was also measured. The experiments were performed with high purity Se (99.9999%) hermetically sealed in an evacuated silica ampoule. Four temperature regions with strongly different relaxation times can be distinguished between room temperature and the melting point: (1) a glassy state below T g , which is stable on the time scale of the experiments, (2) a glassy state above T g , which is metastable on the time scale of the experiments, (3) a region where homogeneous crystal nucleation occurs, and (4) a supercooled liquid, which is stable on the time scale of the experiments. Each region is marked by a change in the slope of the temperature dependence of the sound velocity. Near the glass transition temperature the velocities of longitudinal and transverse sound exhibit hysteresis with a step-like drop on heating and a more continuous rise on cooling. The step-like anomaly in sound velocity may be a general property of the glass transition.

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Section: Methodssupporting

confidence: 81%

Section: Methodsmentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Sound velocity data are also available for liquid Se-Te [29] and S-Se [26] mixtures at temperatures up to about 800°C.…”

Section: Introductionmentioning

confidence: 99%

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Sound velocity in liquid and glassy selenium

Кожевников¹,

Payne²,

Olson³

et al. 2007

Journal of Non-Crystalline Solids

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Density functional and classical simulations of liquid and glassy selenium

et al. 2020

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Molecular dynamics simulations of liquid and glassy selenium have been carried out using density functional (400-773 K, 600 atoms) and classical force field (290-500 K, 5488 atoms) methods. Structural features (structure factors, pair distribution functions, bond lengths, bond and dihedral angles, cavities) and dynamical properties (diffusion coefficients, power spectra, sound velocity, collective excitations, bond lifetimes) agree well with experimental data where available. The structures are predominantly chainlike, with a small fraction of rings with a range of sizes, and large cavity volumes lead to flexible chains. It is striking that the density functional simulations show very few Se 8 rings at 600 K and below.

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Diffusion, relaxation, and aging of liquid and amorphous selenium

Schober

2021

Phys. Rev. B

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The velocity of sound in the liquid S–Se alloy

Cited by 5 publications

References 8 publications

Sound velocity in liquid and glassy selenium

Sound velocity in liquid and glassy selenium

Density functional and classical simulations of liquid and glassy selenium

Diffusion, relaxation, and aging of liquid and amorphous selenium

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