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High pressure metallization and amorphization of the molecular crystal Sn(IBr){sub 2}

Description: An insulator-to-metal transition concurring with amorphization is found in the cubic (Pa{bar 3}) molecular crystal Sn(IBr){sub 2} at P {approx} 20 GPa. Measurements were carried out with diamond-anvil cells at pressures up to {approximately}30 GPa using resistance measurements, X-ray diffraction (XRD), and {sup 119}Sn Moessbauer spectroscopy (MS). With increasing pressure a new crystalline phase is observed in the 10--23 GPa range; at P {approx} 16 GPa a gradual onset of structural disorder is … more
Date: December 31, 1998
Creator: Machavariani, G. Y.; Rozenberg, G. K.; Pasternak, M. P.; Naaman, O. & Taylor, R. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pressure-induced transformations in molecular crystals

Description: A review is given on the unique features of the Moessbauer spectroscopy (MS) which by virtue of the quadrupole interaction and the lattice dynamics allows one to characterize some structural properties in the pressure-induced amorphous state of molecular crystals. Experiments were performed in GeI{sub 4}, SnI{sub 4} and SnBr{sub 4} by means of {sup 119}Sn and {sup 129}I MS with pressures to 35 GPa at cryogenic temperatures using diamond anvil cells.
Date: September 1, 1995
Creator: Taylor, R. D.; Hearne, G. R. & Pasternak, M. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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