title: Thermoelectric properties of Bi2Te3-PbTe pseudo binary near the eutectic composition.
abstract: (Bi2Te3)(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 Bi2Te3, 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.
authors: Electronic Materials Center Korea Institute of Science and Technology, Seoul 136-791, Korea.
authors: Kyooho
authors: K
authors: Jung
authors: Ho Won
authors: HW
authors: Jang
authors: Chong-Yun
authors: CY
authors: Kang
authors: Myong-Jae
authors: MJ
authors: Yoo
authors: Won Chel
authors: WC
authors: Choi
authors: Jin-Sang
authors: JS
authors: Kim