Orientational and translational disorder in semiconducting Zintl compounds
Journal Article
·
· Physical Review, B: Condensed Matter
- Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Rutherford-Appleton Laboratory, Chilton, Oxon OX11 0QX (United Kingdom)
Two alkali-metal--polyvalent-metal Zintl compounds, NaSn and CsPb, exhibit a two-stage melting process with high-temperature solid phases characterized by rapid dynamical disorder. In NaSn this disorder is associated with fast reorientations of the Sn{sub 4}{sup 4{minus}} polyanions closely coupled to a slower migration of the Na{sup +} cations. In CsPb it is associated with rapid reorientations of Pb{sub 4}{sup 4{minus}} polyanions with the Cs{sup +} cations participating in the dynamical disorder on the same time scale. In both cases the disordering has dramatic effects on the electronic and ionic transport and thermodynamic properties.
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 54925
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 21 Vol. 51; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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