Jung, Sung-Jin Kim, Seong Keun Park, Hyung-Ho Hyun, Dow-Bin Baek, Seung-Hyub Kim, Jin-Sang 2024-01-20T09:34:04Z 2024-01-20T09:34:04Z 2021-09-05 2014-06 0361-5235 https://pubs.kist.re.kr/handle/201004/126744 The effects of mechanical deformation and subsequent annealing on the thermoelectric properties and microstructure have been investigated for p-type (Bi0.25Sb0.75)(2)Te-3 alloys prepared by melting followed by quenching. The mechanically deformed pellets were prepared by repetition of cold-pressing of quenched samples at room temperature. Cold-pressed pellets were then annealed at 300A degrees C in vacuum, and the thermoelectric properties and microstructure were traced through the course of the heat treatment. For the heavily deformed samples, the Seebeck coefficient rapidly increased at the very early stage of annealing and did not change as the annealing time increased, due to recrystallization of a new delta-phase which equilibrated at the annealing temperature of 300A degrees C (delta(300)-phase). At the initial stage of annealing (recovery stage), the electrical resistivity sharply increased, probably due to the interaction of antistructural defects with vacancies produced during the cold-pressing treatment. However, for the lightly deformed samples, recrystallization occurred only at some portion of the grain boundaries, and the newly generated delta(300)-phase slowly replaced the original, as-solidified delta(ingot)-phase. English SPRINGER ELECTRICAL-PROPERTIES SINGLE-CRYSTAL BISMUTH PERFORMANCE ENHANCEMENT GROWTH FIGURE BI2TE3 MERIT Thermoelectric Properties of Highly Deformed and Subsequently Annealed p-Type (Bi0.25Sb0.75)(2)Te-3 Alloys Article 10.1007/s11664-013-2851-1 1 JOURNAL OF ELECTRONIC MATERIALS, v.43, no.6, pp.1726 - 1732 JOURNAL OF ELECTRONIC MATERIALS 43 6 1726 1732 scie scopus 000336372400039 2-s2.0-84901936620 Engineering, Electrical & Electronic Materials Science, Multidisciplinary Physics, Applied Engineering Materials Science Physics Article ELECTRICAL-PROPERTIES SINGLE-CRYSTAL BISMUTH PERFORMANCE ENHANCEMENT GROWTH FIGURE BI2TE3 MERIT Mechanical deformation annealing effect (Bi,Sb)(2)Te-3 thermoelectric properties