Etude cristallographique de l'arsénotellurure de zirconium quadratique
Abstract
Single crystals of zirconium arsenotelluride (PbFCl type) have been prepared by direct synthesis from the elements. Chemical analysis gives: {As}/{Zr} = 1.43 ± 0.02 and {Te}/{Zr} = 0.46 ± 0.01 , in atoms. Lattice constants are: a = 3.82 ± 0.01 Å and c = 8.17 ± 0.02Å. Experimental density is equal to 7.14 ± 0.05. Unit cell thus contains Zr 2.00As 2.86Te 0.92. The structure has been solved with 227 reflections of a single crystal recorded at room temperature. The final R factor is 0.081, excluding zero reflections. Part of the arsenic atoms fills a site and the remainder is located in a second site, the occupation of which is completed by a part of zirconium atoms. The third site is occupied, but not filled, by the tellurium atoms and the remainder of zirconium atoms.
- Publication:
-
Journal of Solid State Chemistry France
- Pub Date:
- June 1973
- DOI:
- 10.1016/0022-4596(73)90144-8
- Bibcode:
- 1973JSSCh...7..124M