Thermoelectric properties of the clathrate-I Ba8Ge433
Résumé
The clathrate-I Ba8Ge433 (space group , no. 230, a = 21.307(1) Å) has been synthesized as single phase and characterized by X-ray powder diffraction and metallographic analysis. Electrical and thermal transport measurements have been performed in the temperature range 5-673 K. Ba8Ge433 displays a metal-like electrical resistivity at low temperatures turning into semiconducting-like behavior above 300 K.
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