Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9804245 | Journal of Alloys and Compounds | 2005 | 4 Pages |
Abstract
A sintered polycrystalline sample of Ag1âxPb18SbTe20 (x = 0, 0.1, 0.3) was prepared by a solid-state reaction. The electrical resistivity and Seebeck coefficient were measured from room temperature to about 800 K. The electrical resistivity of Ag1âxPb18SbTe20 (x = 0, 0.1, 0.3) decreases with increasing Ag content. The values of the electrical resistivity are of the order of 10â4 Ω m. The Seebeck coefficient of Ag1Pb18SbTe20 is positive up to 420 K, however, it changes to negative from 420 to 800 K. The absolute value of the Seebeck coefficient of Ag1âxPb18SbTe20 (x = 0.1, 0.3) at 373 K is 404 and 320 μV Kâ1, respectively, which is twice as high as that of state-of-the-art thermoelectric materials.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Atsuko Kosuga, Ken Kurosaki, Masayoshi Uno, Shinsuke Yamanaka,