Year: 2001
Type: article
Abstract: Comprehensive thermogalvanomagnetic measurements have been made on polycrystalline samples of Bi88Sb12. The temperature has ranged from 100 to 300 K and a magnetic field of up to 1 T has been used. The samples have contained up to 1000 ppm of either tin or selenium. We have attempted to calculate the electronic component of the thermal conductivity from the data but have found that this sometimes leads to unacceptable values for the lattice conductivity. More reasonable lattice components are found from the variation of the total thermal conductivity with magnetic field. We confirm our observation of a fall in the lattice conductivity when the grain size is reduced below about 10 μm, but an even greater fall in the electrical conductivity means that the thermoelectric figure of merit is not improved.
Source: physica status solidi (a)
Authors: J.W. Sharp, E.H. Volckmann, H.J. Goldsmid
Institutions: II-VI (United States), UNSW Sydney
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W1978679363