| A high-pressure study of PbCO3 by XRD and Raman spectroscopy |
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| 作者姓名： | 张玉峰 刘景 秦振兴 林传龙 熊伦 李蕊 白利刚 |
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| 作者单位： | 1 Institution of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;;2 Department of Physics, South China University of Technology, Guangzhou 510640, China |
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| 基金项目： | Supported by Chinese Academy of Sciences (KJCX2-SW-N20, KJCX2-SW-N03);National Basic Research Program of China(2011CB808200) |
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| 摘 要： | The pressure-induced phase transitions of PbCO3 are studied using synchrotron radiation in a diamond anvil cell at room temperature. The XRD measurement indicates that PbCO3 with an initial phase of aragonite-type structure undergoes two phase transitions at ～7.8GPa and ～15.7GPa respectively. The higher-pressure phase appearing at ～ 15.7GPa is stable up to 51.8GPa. The two phase transitions are further confirmed by Raman scattering up to 23.3GPa. During the decompression process, the high-pressure phases of PbCO3 are gradually recovered to the starting aragonite-type structure, but exhibit some hysteresis. The bulk modulus B0 of the aragonite-type structure is obtained to be 63±(3) GPa by fitting the volume-pressure data to the Birch-Murnaghan equation of states with B0 fixed to 4.
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| 关 键 词： | XRD Raman phase transition bulk modulus |
| 收稿时间： | 2012-4-18 |
| 修稿时间： | 2012-6-7 |
A high-pressure study of PbCO3 by XRD and Raman spectroscopy |
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| ZHANG Yu-Feng,LIU Jing,QIN Zhen-Xing,LIN Chuan-Long,XIONG Lun,LI Rui,BAI Li-Gang.A high-pressure study of PbCO3 by XRD and Raman spectroscopy[J].High Energy Physics and Nuclear Physics,2013,37(3):112-116. |
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| Authors: | ZHANG Yu-Feng LIU Jing QIN Zhen-Xing LIN Chuan-Long XIONG Lun LI Rui BAI Li-Gang |
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| Institution: | 1 Institution of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China 2 Department of Physics, South China University of Technology, Guangzhou 510640, China |
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