The BieSbeTe alloys with different Bi/Sb/Te ratio were fabricated by an innovative method. For that purpose the oxide reagents were melted at high temperature, then quenched to form pellets, milled to a powder and finally reduced in hydrogen at various temperatures. Complex structures consisting of connected thin layers forming a continuous path between nano- and micrometer size grains have been obtained. The electrical conductivity, Seebeck coefficient and thermal conductivity have been determined over temperature range from 196 to þ300 C in argon atmosphere. The highest figure of merit in the whole temperature range was found for Bi0.4Sb1.6Te3 compound reduced at 400 C for 10 h in hydrogen atmosphere. At a near-room temperature the figure of merit of this compound was found to be equal to 0.7.
Authors
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1016/j.matchemphys.2016.04.039
- Category
- Publikacja w czasopiśmie
- Type
- artykuł w czasopiśmie wyróżnionym w JCR
- Language
- angielski
- Publication year
- 2016
