Abstract
We have investigated the effect of hydrostatic pressure on the structural properties of CsGeBr 3 by means of X-ray diffraction and Raman spectroscopy. Pressures were generated using diamond anvil cells. At 1.0(2) GPa the trigonal ambient pressure modification of CsGeBr 3 undergoes a reversible first-order phase transition to a high-pressure polymorph crystallizing in the cubic perovskite structure. The variation in Ge-Br bond length is obtained from single-crystal structure refinements of both the low- and the high-pressure modifications. The phase transformation occurs at a relative volume of V/V 0 = 0.92, and the prediction from Hartree-Fock calculations is in agreement with this experimental result.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
