The in situ high-pressure behavior of the semiconductor antimony trioxide(Sb_2O_s) is investigated by the Raman spectroscopy techniques and angle-dispersive synchrotron x-ray powder diffraction in a diamond anvil cell up to31.5 and 30.7 GPa,respectively.New peaks observed in the external lattice mode range in the Raman spectra at 13.5 GPa suggest that the structural phase transition occurs.The group mode(140 cm^(-1)) in Sb_2O_3 exhibits anomalous pressure dependence;that is,the frequency decreases gradually with the increasing pressure.High pressure synchrotron x-ray diffraction measurements at room temperature reveal that the transition from the orthorhombic structure to high-pressure new phase occurs at about 14.2 GPa,corresponding to the softening of the group optic mode(140 cm^(-1)).
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机译：Integration of ion-exchange chromatography fractionation with reversed-phase liquid chromatography-atmospheric pressure chemical ionization mass spectrometer and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry for isolation and identification of compounds in psoralea corylifolia
机译：High-resolution structural studies of ultra-thin magnetic, transition metal overlayers and two-dimensional transition metal oxides using synchrotron radiation
