M. Lorenzen

TL;DR: In this article, the magnetic properties of the Invar alloy have been investigated by x-ray emission spectroscopy as a function of pressure up to 20 GPa, and the amplitude of the Fe local moment, deduced from the Fe $K\ensuremath{\beta}$ line satellite intensity, is reduced at two characteristic step values.

TL;DR: Very high-resolution inelastic x-ray scattering is employed to determine the dynamic response of the high-density crystalline water phases ice IX and ice XII in the Q=2.0-15.5 nm - 1 momentum transfer range as discussed by the authors.

Abstract: the Si-Si bond length contained along the polymer backbone of polydimethylsilane (which is reported to be 0.4 nm['ll). It is more likely that the rod-like features correspond to chain folds at the single crystal surface, as expected for the regular adjacent reentry model (Fig. 1). The dimensions of the unit cell are 0.80f0.05 nm and 0.62f0.03 nm, with a lattice angle of 95f5". These results are consistent with electron and X-ray diffraction studies of polydimethylsilane, which report the unit cell dimensions as being a = 0.80 nm, b = 1.22 nm, and y = 91", where h corresponds to twice the interchain lattice spacing.l2'1 Hence it can be concluded that the folding of polymer chains at the surface of polydimethylsilane single crystals can be seen at molecular scale resolution by atomic force microscopy. Comparison with previous electron and X-ray diffraction data indicates that polymer chain folding at the surface is consistent with the regular adjacent reentry model.

TL;DR: Synchrotron x-ray diffraction has been used to investigate the mesomorphism of a monoolein-water dispersion under hydrostatic pressure and shows the existence of a new phase, probably with cubic symmetry, before the transition from the L to c lamellar phase occurs.