Thermal Conductivity of Sr1 –xBaxF2 Single Crystals

Thermal Conductivity of Sr1 –xBaxF2 Single Crystals

— The thermal conductivity κ of single crystals of the Sr 1– x Ba x F 2 fluorite solid solution series has been measured in the temperature range 50–300 K by an absolute steady-state axial heat flow technique. The thermal conductivity has been shown to decrease with increasing temperature. Its compo...

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Veröffentlicht in:Inorganic materials 2021-06, Vol.57 (6), p.629-633
Hauptverfasser: Popov, P. A., Krugovykh, A. A., Konyushkin, V. A., Nakladov, A. N., Kuznetsov, S. V., Fedorov, P. P.
Format: Artikel
Sprache:eng
Schlagworte:
Chemistry
Chemistry and Materials Science
Composition
Equilibrium flow
Fluorite
Heat conductivity
Heat transfer
Heat transmission
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Liquidus
Materials Science
Single crystals
Solid solutions
Thermal conductivity
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Beschreibung
Zusammenfassung:— The thermal conductivity κ of single crystals of the Sr 1– x Ba x F 2 fluorite solid solution series has been measured in the temperature range 50–300 K by an absolute steady-state axial heat flow technique. The thermal conductivity has been shown to decrease with increasing temperature. Its composition dependences have a minimum at intermediate compositions. The congruently melting composition Sr 0.34 Ba 0.66 F 2 , corresponding to the minimum in liquidus curves, has κ = 15.2 W/(m K) at 50 K and 2.95 W/(m K) at 300 K.
ISSN:0020-1685
1608-3172
DOI:10.1134/S002016852106008X