2002/09/04 by L. Ehm, K. Knorr, Ehm, L. +13
Physics and Astronomy · #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.cond-mat/0209082
12 pages, 5 figures, 4 tables, submitted to J. Phys. Chem. Sol
arxiv created 2002/09/04 · arxiv updated 2009/11/30
The high-pressure behaviour of alpha-PbF2 has been investigated by angular-dispersive synchrotron X-ray powder diffraction up to 6.55(8) GPa. The fit of a 3rd-order Birch-Murnaghan equation-of-state gave the volume at zero pressure V0=194.14(4)Å3 and the bulk modulus b0=47.0(6)GPa with the pressure derivative b'=7.9(4). The continuous-symmetry-measure approach has been used for the quantification of the distortion of the coordination polyhedron in alpha-PbF2 revealing an increasing distortion with pressure. keywords here: high pressure, X-ray diffraction, inorganic compounds PACS: 61.10.N2, 62.50.+P, 64.20.+t, 07.35, 61.10.-i