Crystal stability and pressure-induced phase transitions in scheelite AWO(4) (A = Ca, Sr, Ba, Pb, Eu) binary oxides. I: A review of recent ab initio calculations, ADXRD, XANES, and Raman studies

摘要

The structural properties of CaWO4, SrWO4, BaWO4, PbWO4, and EuWO4 scintillating crystals under pressure have been studied by X-ray powder diffraction, X-ray absorption near-edge structure measurements, Raman spectroscopy, and ab initio density functional theory calculations. The results obtained from these studies will be reviewed here and their differences and similitudes discussed.