Thermal conductivity of alloys of the bismuth-antimony system in solid and liquid states

Magomedov, A. M.; Pashaev, B. P.

doi:10.1007/bf00819456

Cited by 6 publications

(4 citation statements)

References 5 publications

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“…A signature of electron-hole coupling in semiconductors is the bipolar thermal conduction at elevated temperatures, when the calculated lattice thermal conductivity ( κ - Lσ Τ, where κ is the total thermal conductivity, L the Lorenz number, σ the electrical conductivity, and T the absolute temperature) is significantly higher than the T − 1 temperature dependence expected for phonon-phonon interaction dominated thermal conductivity1234567. Similar effect has also been found in semimetals8910. For intrinsic semiconductors, it is well recognized that the mobility ratio between electrons and holes () determines the bipolar thermal conductivity ( κ b ), which maximizes when b = 11112.…”

mentioning

confidence: 55%

Conductivity-limiting bipolar thermal conductivity in semiconductors

Wang

Yang

Toll

et al. 2015

Sci Rep

121

101

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Intriguing experimental results raised the question about the fundamental mechanisms governing the electron-hole coupling induced bipolar thermal conduction in semiconductors. Our combined theoretical analysis and experimental measurements show that in semiconductors bipolar thermal transport is in general a “conductivity-limiting” phenomenon, and it is thus controlled by the carrier mobility ratio and by the minority carrier partial electrical conductivity for the intrinsic and extrinsic cases, respectively. Our numerical method quantifies the role of electronic band structure and carrier scattering mechanisms. We have successfully demonstrated bipolar thermal conductivity reduction in doped semiconductors via electronic band structure modulation and/or preferential minority carrier scatterings. We expect this study to be beneficial to the current interests in optimizing thermoelectric properties of narrow gap semiconductors.

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confidence: 55%

Conductivity-limiting bipolar thermal conductivity in semiconductors

Wang

Yang

Toll

et al. 2015

Sci Rep

121

101

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“…The measurements of Savchenko et al 16 performed at 2013 in a laser-flash instrument with a 4.5% uncertainty were considered as primary data, as they have already been included in the previous derivation of thermal conductivity reference correlations for indium, lead and tin. 7 For the same reason, the guarded heat-flow measurements of Magomedov and Pashaev, 17 Dutchak and Panasyuk, 19 and Nikolsky et al 21 were also included in the primary data set. The measurements of Krestovnikov et al 18 performed in a concentric-cylinders instrument with 8% uncertainty were also included in the primary data set.…”

Section: Data Compilationmentioning

confidence: 99%

“…Kondo et al 15 (◆), Savchenko et al 16 (●), Magomedov and Pashaev 17 (△), Krestovnikov et al 18 (⌖), Dutchak and Panasyuk 19 (■), Pashaev 20 (⬙), Nikolsky et al 21 ( + ), Nagai et al 22 : Microgravity (◒) Normal gravity (◓), Veinik et al 23 ( x ), Filippov 24 (- -), Powell and Tye 25 (▲), and Konno 26 (◇). Previous reference correlation of Mills et al 13 (—), and reference values of Touloukian et al 12 ( ) are also shown.…”

Section: Figmentioning

confidence: 99%

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Reference Correlations for the Thermal Conductivity of Liquid Bismuth, Cobalt, Germanium, and Silicon

Assael

Antoniadis

Wakeham

et al. 2017

Journal of Physical and Chemical Reference Data

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The available experimental data for the thermal conductivity of liquid bismuth, cobalt, germanium and silicon have been critically examined with the intention of establishing thermal conductivity reference correlations. All experimental data have been categorized into primary and secondary data according to the quality of measurement specified by a series of criteria. The proposed standard reference correlations for the thermal conductivity of liquid bismuth, cobalt, germanium, and silicon are respectively characterized by uncertainties of 10, 15, 16 and 9.5% at the 95% confidence level.

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Why Are Most Nuclei Axially Symmetric?

Zickendraht

1991

Annalen der Physik

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Den Annulen der Physik zum 200. Geburtstag gewiclmetA b s t r a c t . A previous publication was concerned with the average prolateness of nuclei [l]. With the same methods as there it is shown here that axial symmetry should be predominant in nuclei, which it is indeed. The tools for the proof are special collective and single particle coordinates. The nucleon-nucleus interaction is approximated by a shell model potential plos Nilsson coupling; strong coupling is iiwd. Thc minimum of the total energy is found for axial symmetry.Wmum siiid die meisten Kerne sxidsymmetrisch ' 1 Tnhaltsubersicht. Eine voraufgegangene Arbeit befante sich mit dcr Tatsachc, daB Kerne im Mittel prolat sind [l]. Ahnlich wie dort wird hier gezeigt, dill3 Kerne meist axialsymmotrisch scin sollten, wiis sie auoli sind. Beim Beweis werden spezielle Kollektiv-und Einteilchenfreiheitsgruclo verwendct. Die Nukleon-lierti-~Vechfielwirkung wird durcli ein Schalenmodell-Potential plus Xilsson Kopplung angeniihert; starkc Kopplung wird benutzt. Das Minimum der Cesamtc.nergie wird fiir .-\xiulsymmctric gefiinden.

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Thermal conductivity of alloys of the bismuth-antimony system in solid and liquid states

Cited by 6 publications

References 5 publications

Conductivity-limiting bipolar thermal conductivity in semiconductors

Conductivity-limiting bipolar thermal conductivity in semiconductors

Reference Correlations for the Thermal Conductivity of Liquid Bismuth, Cobalt, Germanium, and Silicon

Why Are Most Nuclei Axially Symmetric?

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