Thermo-electronic properties of the copper-oxide Cu6O8YCI1−xBrx

We report the thermal conductivity and the Seebeck coefficient of polycrystalline samples of Cu 6 O 8 YCl 1− x Br x . The lattice constant a linearly increases with increasing Br − concentration x , indicating an expansion of the Cu 6 O 8 cage. At 350 K, the thermal conductivity κ is small and under...

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Bibliographic Details
Published in:Journal of the Korean Physical Society 2013-08, Vol.63 (3), p.420-422
Main Authors: Kawashima, Kenji, Takeda, Hiroki, Tozawa, Hazuki, Akimitsu, Jun
Format: Article
Language:English
Subjects:
Mathematical and Computational Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Theoretical
Online Access:Get full text
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Summary:We report the thermal conductivity and the Seebeck coefficient of polycrystalline samples of Cu 6 O 8 YCl 1− x Br x . The lattice constant a linearly increases with increasing Br − concentration x , indicating an expansion of the Cu 6 O 8 cage. At 350 K, the thermal conductivity κ is small and undergoes very little change with x , suggesting the existence of an anharmonic vibration. On the other hand, the Seebeck coefficient S is enhanced by substituting Br − for Cl − . These facts indicate that the thermoelectronic properties are sensitive to the Cu 6 O 8 cage size in the Cu 6 O 8 YCl system.
ISSN:0374-4884
1976-8524
DOI:10.3938/jkps.63.420