Journal of Electronic Materials

, Volume 44, Issue 8, pp 2578–2584

Nanostructuring of Undoped ZnSb by Cryo-Milling

  • X. Song
  • K. Valset
  • J.S. Graff
  • A. Thøgersen
  • A.E. Gunnæs
  • S. Luxsacumar
  • O.M. Løvvik
  • G.J. Snyder
  • T.G. Finstad
Article

DOI: 10.1007/s11664-015-3708-6

Cite this article as:
Song, X., Valset, K., Graff, J. et al. Journal of Elec Materi (2015) 44: 2578. doi:10.1007/s11664-015-3708-6

Abstract

We report the preparation of nanosized ZnSb powder by cryo-milling. The effect of cryo-milling then hot-pressing of undoped ZnSb was investigated and compared with that of room temperature ball-milling and hot-pressing under different temperature conditions. ZnSb is a semiconductor with favorable thermoelectric properties when doped. We used undoped ZnSb to study the effect of nanostructuring on lattice thermal conductivity, and with little contribution at room temperature from electronic thermal conductivity. Grain growth was observed to occur during hot-pressing, as observed by transmission electron microscopy and x-ray diffraction. The thermal conductivity was lower for cryo-milled samples than for room-temperature ball-milled samples. The thermal conductivity also depended on hot-pressing conditions. The thermal conductivity could be varied by a factor of two by adjusting the process conditions and could be less than a third that of single-crystal ZnSb.

Keywords

Nanostructuring ZnSb thermal conductivity thermoelectric materials 
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Copyright information

© The Minerals, Metals & Materials Society 2015

Authors and Affiliations

  • X. Song
    • 1
  • K. Valset
    • 1
  • J.S. Graff
    • 2
  • A. Thøgersen
    • 1
    • 2
  • A.E. Gunnæs
    • 1
  • S. Luxsacumar
    • 2
  • O.M. Løvvik
    • 1
    • 2
  • G.J. Snyder
    • 3
  • T.G. Finstad
    • 1
  1. 1.Department of PhysicsUniversity of OsloOsloNorway
  2. 2.SINTEF Mat and ChemOsloNorway
  3. 3.Materials ScienceCalifornia Institute of TechnologyPasadenaUSA