G. Aquilanti

High-pressure structural study of the scheelite tungstates CaWO4 and SrWO4

Angle-dispersive x-ray-diffraction and x-ray-absorption near-edge structure measurements have been performed on

Novel XAFS capabilities at ELETTRA synchrotron light source

{mathrm{CaWO}}_{4}

Determination of the high-pressure crystal structure of Ba W O 4 and Pb W O 4

and

Portable laser-heating stand for synchrotron applications

{mathrm{SrWO}}_{4}

Eu doping in multiferroic BiFeO3 ceramics studied by Mossbauer and EXAFS spectroscopy

up to pressures of approximately 20 GPa. Both materials display similar behavior in the range of pressures investigated in our experiments. As in the previously reported case of

A new EXAFS investigation of local structural changes in amorphous and crystalline GeO2 at high pressure

{mathrm{CaWO}}_{4}

Melting of iron determined by X-ray absorption spectroscopy to 100 GPa

, under hydrostatic conditions

Hyperspectral μ-XANES mapping in the diamond-anvil cell: analytical procedure applied to the decomposition of (Mg,Fe)-ringwoodite at the upper/lower mantle boundary

{mathrm{SrWO}}_{4}

Iron oxidation state of FeTiO 3 under high pressure

undergoes a pressure-induced scheelite-to-fergusonite transition around 10 GPa. Our experimental results are compared to those found in the literature and are further supported by ab initio total-energy calculations, from which we also predict the instability at larger pressures of the fergusonite phases against an orthorhombic structure with space group Cmca. Finally, a linear relationship between the charge density in the

Development of micro-XANES mapping in the diamond anvil cell.

A{mathrm{O}}_{8}