Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1624605 | Journal of Alloys and Compounds | 2008 | 7 Pages |
Abstract
The crystal structure of PtAl4 was determined from synchrotron data (λ = 0.5608 Å) of a twinned crystal. PtAl4 crystallizes in the trigonal space group P3c1 (no. 158). The lattice constants are a = 13.077(1) Å and b = 9.6342(7) Å. The crystal structure represents a new structure type (Pearson symbol hP90) and consists of layers of edge and face sharing Al10-polyhedra, centered by Pt-atoms. The polyhedra layers are stacked along the crystallographic c-axis and are connected by common corners. Two out of 14 Al-positions show positional disorder and occupational deficiencies.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Michael Wörle, Frank Krumeich, Tapan Chatterji, Stefan Kek, Reinhard Nesper,