Structure maps for hcp metals from first principles calculations

Details Structure maps for hcp metals from first principles calculations Structure maps for hcp metals from first principles calculations

2010-02-15

arxiv.org/abs/1002.2822v1

Physics

Condensed Matter

Materials Science

7 pages, 4 figures, 1 table

Scientific paper

The ability to predict the existence and crystal type of ordered structures of materials from their components is a major challenge of current materials research. Empirical methods use experimental data to construct structure maps and make predictions based on clustering of simple physical parameters. Their usefulness depends on the availability of reliable data over the entire parameter space. Recent development of high throughput methods opens the possibility to enhance these empirical structure maps by {\it ab initio} calculations in regions of the parameter space where the experimental evidence is lacking or not well characterized. In this paper we construct enhanced maps for the binary alloys of hcp metals, where the experimental data leaves large regions of poorly characterized systems believed to be phase-separating. In these enhanced maps, the clusters of non-compound forming systems are much smaller than indicated by the empirical results alone.

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