Abstract
In this paper, a review of the thermodynamic, electrical and structural properties of liquid alkali-tellurium alloys is presented with a special emphasis on the interplay between these properties. The thermodynamic properties indicate ordering of the solutions at compositions corresponding to about 12, 50, and 67 at.% of alkali atoms. The electrical conductivity and thermopower data confirm that these liquids are true semiconductors. The neutron diffraction patterns coupled with the above information indicate that in the case of liquid K0.12Te0.88 the measured structure is dominated by the TeTe contribution, and is remarkably similar to that of pure liquid tellurium, while the equiatomic alloy K0.50Te0.50 is shown to contain mostly Te pairs which are identified with Zintl ions, Te22-.
| Original language | English |
|---|---|
| Pages (from-to) | 356-361 |
| Number of pages | 6 |
| Journal | Journal of Non-Crystalline Solids |
| Volume | 156-158 |
| Issue number | PART 1 |
| DOIs | |
| State | Published - May 2 1993 |
| Externally published | Yes |
Funding
This work was performed under the auspices of the Division of Materials Sciences, Office of Basic Energy Sciences, US Department of Energy, under Contract W-31-109-Eng-38. The authors acknowledge support from the Division of Educational Programs at Argonne for M. Doyle. Special thanks for the operational staff of IPNS for assistance during the neutron scattering measurements. Professor P. B6ttcher and Dr. I. Schewe-Miller kindly shared with the authors their work on the crystalline structure of tellurides.