High pressure optical and X-ray diffraction studies of two polymorphs of K(RE)P2Se6 (RE=Pr and Tb)

High pressure electrical transport measurements of Cs2MoS4 and KTbP2Se6 and X-ray diffraction study of Cs2MoS4

“…In this material, we also found a pressureinduced phase transition at about 9.2 GPa from an orthorhombic phase I to another orthorhombic phase II but with the b-axis doubled with respect to the low pressure phase [3]. We have proposed that the high pressure phase is a result of a charge transfer from the selenium to the phosphorous accompanied by the formation of Se -Se bonds.…”

“…3 we show the pressure dependence of the resistance of KTbP 2 Se 6 upon loading and unloading. It can be seen that the quasi-hydrostatic conditions of the measurements cause a much larger hysteresis than observed under pure hydrostatic conditions (0.4 GPa [3]). Nevertheless, it can be seen that the phase transition at about 9.2 GPa is reflected in a sharp drop of the resistance.…”

“…In recent papers [1][2][3] we have reported the results of high pressure optical studies of Cs 2 MoS 4 [1,2] and KTbP 2-Se 6 [3]. In the case of Cs 2 MoS 4 , we have found two structural phase transitions.…”

“…[1] and [3]. Energy dispersive X-ray diffraction measurements were conducted at the B2 station of the Cornell High Energy Synchrotron Source (CHESS).…”

Characterization and structural determination of a new sodium lanthanum phosphate thiosulfate, Na2La[PO4][S2O3]

“…Our work in lanthanide and actinide-metal chalcophosphates has revealed important trends in structural chemistry [6][7][8][9][10]. The rare-earth metal phosphates have been of interest for some time [11] and our research team has been developing the chemistry of rare-earth metal phosphates [12][13][14][15][16][17].…”