Crystal Structure of Cesium-V

Abstract

The crystal structure of the high-pressure phase cesium-V was investigated using monochromatic synchrotron x-ray diffraction. Full profile refinements of powder diffraction data resulted in a solution with space group $\mathrm{Cmca}$ and 16 atoms in the orthorhombic unit cell. The Cs-V structure can be viewed as a distorted fcc structure. Atoms occupy two different Wyckoff positions with 10-fold and 11-fold coordination, respectively. This new structure type is considered a possible candidate for high-pressure phases of other elemental metals.