Santamaria-Perez D1, Vegas A, Muehle C, Jansen M.
Acta Crystallogr B. 2011 Apr;67(Pt 2):109-15. doi: 10.1107/S010876811005370X. Epub 2011 Feb 19.The high-pressure behaviour of dirubidium sulfide, Rb(2)S, with antifluorite-type structure under room conditions (space group Fm ̄3m) has been studied up to 8 GPa at room temperature using angle-dispersive X-ray powder diffraction in a diamond-anvil cell (DAC). X-ray measurements have allowed us to completely characterize two phase transitions upon compression: (i) to an anticotunnite-type structure (Pnma) at some pressure between 1 bar and 0. Read More