Author/Authors :
L Ehm، نويسنده , , K Knorr، نويسنده , , F M?dler، نويسنده , , H. Voigtlander ، نويسنده , , E Busetto، نويسنده , , A Cassetta، نويسنده , , A Lausi، نويسنده , , B Winkler، نويسنده ,
Abstract :
The high-pressure behaviour of α-PbF2 was investigated by angular-dispersive synchrotron X-ray powder diffraction up to 6.55(8) GPa. The fit of a third-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 α-PbF2 revealing an increasing distortion with pressure.
