Abstract
(Bi 2Te 3) 1-x(PbTe) x binary systems near eutectic composition were prepared by melting of elemental metals and a sequential water quenching process and their microstructures and thermoelectric properties were investigated. Multiple phases such as Bi 2Te 3, BiPbTe and PbTe were observed due to phase separation when the composition x was higher than the eutectic point. Also the electrical conduction type of the alloys converted from p-type to n-type in the phase separated alloys. The lattice thermal conductivities in the phase-separated alloys are lower than those in alloys without phase separation, attributable to increased boundary scattering.
Original language | English |
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Pages (from-to) | 3492-3495 |
Number of pages | 4 |
Journal | Journal of Nanoscience and Nanotechnology |
Volume | 12 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2012 |
Externally published | Yes |
Keywords
- PbTe
- Phase separation
- Thermal conductivity
- Thermoelectric
ASJC Scopus subject areas
- Bioengineering
- Chemistry(all)
- Biomedical Engineering
- Materials Science(all)
- Condensed Matter Physics