Thermal conductivity of single crystals of Ba1–x R x F2 + x (R = La, Ce, Nd, or Gd) solid solutions

The thermal conductivity of single crystals of Ba1–хRхF2 + х (R = La, Ce, Nd, or Gd) solid solutions has been experimentally investigated in the temperature range of 50–300 K. With an increase in the content of rare-earth elements, the thermal-conductivity behavior in these series changes from that...

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Bibliographic Details
Published in:Crystallography reports 2017-03, Vol.62 (2), p.283-287
Main Authors: Popov, P. A., Fedorov, P. P., Konyushkin, V. A.
Format: Article
Language:English
Subjects:
Cerium
Crystal defects
Gadolinium
Heat conductivity
Heat transfer
Lanthanum
Rare earth elements
Single crystals
Solid solutions
Thermal conductivity
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Summary:The thermal conductivity of single crystals of Ba1–хRхF2 + х (R = La, Ce, Nd, or Gd) solid solutions has been experimentally investigated in the temperature range of 50–300 K. With an increase in the content of rare-earth elements, the thermal-conductivity behavior in these series changes from that characteristic of defect single crystals to the behavior typical of glasslike materials. The thermal-conductivity concentration dependences are almost identical, which can be explained by the same type of defect clusters arising upon heterovalent ion substitution.
ISSN:1063-7745
1562-689X
DOI:10.1134/S1063774517020225