Article ID Journal Published Year Pages File Type
1615054 Journal of Alloys and Compounds 2013 5 Pages PDF
Abstract

A new high pressure structure of the CaSi2 compound is predicted from first-principles calculations. It corresponds to the KHg2-type which is a slightly distorted derivative of the AlB2-type. Several indications suggest that it is likely the true structure of the superconducting high pressure polymorph of the CaSi2 compound commonly reported as AlB2-like polymorph.

► A new polymorph of the CaSi2 compound is predicted. ► The new structure is likely the true structure of the AlB2-like polymorph. ► Structural and vibrational properties are investigated.

Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
Authors
,