WANG Ya, JIANG Lingjie, DENG Xiaolong. Numerical Study of the Interaction between High-Speed Gas and Elliptical Column Cloud[J]. Chinese Journal of High Pressure Physics, 2020, 34(1): 012301. doi: 10.11858/gywlxb.20190748
Citation:
ABLIZ Matursun, ANWAR Hushur, XIE Cuihuan, QI Wenming. High Pressure Raman Spectroscopic Study of PbCO3 in Different Pressure Transmitting Medium[J]. Chinese Journal of High Pressure Physics, 2022, 36(1): 011201. doi: 10.11858/gywlxb.20210813
WANG Ya, JIANG Lingjie, DENG Xiaolong. Numerical Study of the Interaction between High-Speed Gas and Elliptical Column Cloud[J]. Chinese Journal of High Pressure Physics, 2020, 34(1): 012301. doi: 10.11858/gywlxb.20190748
Citation:
ABLIZ Matursun, ANWAR Hushur, XIE Cuihuan, QI Wenming. High Pressure Raman Spectroscopic Study of PbCO3 in Different Pressure Transmitting Medium[J]. Chinese Journal of High Pressure Physics, 2022, 36(1): 011201. doi: 10.11858/gywlxb.20210813
Using diamond anvil cell (DAC) technique and Raman spectroscopy, we have studied the stability of PbCO3 at high pressure. Solid NaCl, mixture of methanol-ethanol-water (16∶3∶1) and methanol-ethanol (4∶1) were used as pressure transmitting medium. The highest pressure in this study reached up to 24.5, 25.0 and 67.0 GPa, respectively. It is found that PbCO3 undergoes three phase transitions at around 10, 15 and 30 GPa, respectively. In addition, the softening of the out of bending vibration mode belonging to group was observed. By comparison with the Grüneisen parameters () of PbCO3 in different pressure-transfer media, the phase transition mechanism is slightly different, and the influence of pressure on lattice vibration is greater than that of group, which is attributed to the larger distance of the Pb2+—O bond. PbCO3 did not decompose or amorphized in the pressure range of 67.0 GPa, the highest pressure reached in this study. The observed PbCO3-Ⅳ phase above 30.0 GPa is stable up to 67.0 GPa.
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WANG Ya, JIANG Lingjie, DENG Xiaolong. Numerical Study of the Interaction between High-Speed Gas and Elliptical Column Cloud[J]. Chinese Journal of High Pressure Physics, 2020, 34(1): 012301. doi: 10.11858/gywlxb.20190748
WANG Ya, JIANG Lingjie, DENG Xiaolong. Numerical Study of the Interaction between High-Speed Gas and Elliptical Column Cloud[J]. Chinese Journal of High Pressure Physics, 2020, 34(1): 012301. doi: 10.11858/gywlxb.20190748
Figure 1. Comparison of the XRD spectra of PbCO3with the standard spectra
Figure 2. High pressure Raman spectra of PbCO3 in solid NaCl pressure transmitting medium
Figure 3. Pressure-induced mode shifts of PbCO3 undergoes the solid NaCl pressure transmitting medium (ν1, ν2 and ν4 are symmetric stretching vibration, out-of-plane bending vibration, and in-plane bending vibration, respectively.)
Figure 4. High pressure Raman spectra of PbCO3 in mixture of MEW pressure transmitting medium
Figure 5. Pressure-induced mode shifts of PbCO3 undergoes the mixture of MEW pressure transmitting medium (ν1, ν2 and ν4 are symmetric stretching vibration, out-of-plane bending vibrations, and in-plane bending vibration, respectively.)
Figure 6. High pressure Raman spectra of PbCO3 in mixture of methanol-ethanol pressure transmitting medium
Figure 7. Pressure-induced mode shifts undergoes the mixture of methanol-ethanol pressure transmitting medium (ν1, ν2 and ν4 are symmetric stretching vibration, out-of-plane bending vibration, and in-plane bending vibration, respectively.)
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