ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Ba8Ga16Ge30 clathrate material has being intensely investigated as a candidate of promisingthermoelectric materials. In this work, Ba8Ga16+xSbxGe30-2x (x=0,1) single crystals have been synthesizedby the Ga flux method, using high purity elemental Ba, Sb, Ga, and Ge as starting materials. PowderX-ray diffraction, Scanning electron microscopy equipped with energy-dispersive X-ray spectroscopyand Raman spectroscopy were used to characterize the single crystals. Seebeck coefficient of the crystalswas measured from 300 to 800 K. The result indicates that the crystals are p-type semiconductor, which isdifferent from the crystals synthesized by the Czochralski method. The Seebeck coefficient almost doesnot change after doping Sb in the whole temperature measured and it is in the range of 200 to 300μV/K
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.553.pdf
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