title: Cd(13-x)In(y)Sb10 (x approximately 2.7, y approximately 1.5): an interstitial-free variant of thermoelectric beta-Zn4Sb3.
abstract: Cd(13-x)In(y)Sb10 (x approximately 2.7, y approximately 1.5) was synthesized in the form of mm-sized crystals from reaction mixtures containing excess cadmium. The intermetallic compound crystallizes in the rhombohedral space group R3m with a=12.9704(4), c=12.9443(5) A, V=1886.0(1) A3, Z=3 and is isostructural to thermoelectric beta-Zn4Sb3 and beta-Cd4Sb3. However, in contrast to these last two compounds Cd(13-x)In(y)Sb(10) is free from interstitial atoms and does not display any temperature polymorphism. The electrical resistivity of Cd(13-x)In(y)Sb10 is considerably higher than that of Zn4Sb3 and Cd4Sb3 although the temperature behavior remains that of a metal. The thermal conductivity of Cd(13-x)In(y)Sb10 is low, with room-temperature magnitudes around 0.8 W m(-1) K(-1), which is comparable to disordered or complex structured Cd4Sb3 and Zn4Sb3.
authors.affiliation: Inorganic Chemistry, Stockholm University, 10691 Stockholm, Sweden.
authors.forename: Andreas
authors.initials: A
authors.lastname: Tengå
authors.forename: Sven
authors.initials: S
authors.lastname: Lidin
authors.forename: Jean-Philippe
authors.initials: JP
authors.lastname: Belieres
authors.forename: Nathan
authors.initials: N
authors.lastname: Newman
authors.forename: Yang
authors.initials: Y
authors.lastname: Wu
authors.forename: Ulrich
authors.initials: U
authors.lastname: Häussermann