Melting Line of Graphite

Kondratyev, A. M.; Rakhel, A. D.

doi:10.1103/physrevlett.122.175702

Cited by 20 publications

(3 citation statements)

References 26 publications

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“…This analogy between defect and anharmonic phonon oscillation was proposed in the number of our recent works [16][17][18] and was successfully used to resolve discrepancies in experimental thermodynamic properties of graphite near the melting temperature 17,[19][20][21] . In the nutshell, this analogy relates strong anharmonicity to finite displacement of atom layers caused by shear phonon modes, and subsequent reconstruction of interatomic bonds.…”

Section: Introductionmentioning

confidence: 90%

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Planar defects as a way to account for explicit anharmonicity in high temperature thermodynamic properties of silicon

Kondrin¹,

Lebed²,

Brazhkin³

2023

Preprint

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Section: Introductionmentioning

confidence: 90%

“…Earlier we have explained this underestimation of high temperature specific heat measured by drop calorimeters by the effect of planar defects quenching during cooling 18 . The most reliable method of determination of specific heat would be "one-shot measurement" like pulse-heating one [19][20][21] .…”

Section: Have Relative Volume Expansion ∆Vmentioning

confidence: 99%

Planar defects as a way to account for explicit anharmonicity in high temperature thermodynamic properties of silicon

Kondrin¹,

Lebed²,

Brazhkin³

2023

Preprint

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“…The experimental method used in this work, which has been developed for investigation of thermophysical properties of liquid metals and carbon at high temperatures and pressures, is described elsewhere [19,32]. Here we will only briefly explain the essence of this method and indicate some improvements made in this work.…”

Section: Description Of the Experimental Techniquementioning

confidence: 99%

Metal–non-metal transition in lead–bismuth eutectic

Kondratyev

Korobenko

Rakhel

2022

J. Phys.: Condens. Matter

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Thermodynamic functions and electrical resistivity of Pb-Bi eutectic alloy have been measured over wide ranges of specific volume and pressure in the liquid and gaseous state. The experimental data show a crossover from metallic to insulating behavior in the electrical resistivity of the alloy when its specific volume increases. It is found that in the crossover region the constant volume temperature coefficient of resistivity changes sign from positive to negative and passes through zero at a value of the specific volume which is 2.4 times larger than that in normal state. The second salient feature of the alloy revealed by these experiments is that the isochores plotted in the specific internal energy – pressure plane are straight lines. Based on these experimental data and using an earlier developed approach, an equation of state of the alloy has been constructed whose accuracy is determined mainly by the errors of the measurements. It is shown that this equation of state can be used to obtain direct estimates of the specific volume and pressure at the critical point of the liquid-gas transition as well as the critical volume for the metal-non-metal transition observed in this eutectic. The results indicate that the critical specific volumes for these two transitions are equal, and the metal-non-metal transition can be described by the classical percolation theory.

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