| Phase Transition and EOS of Cinnabar （α-HgS） at High Pressure and High Temperature |
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| 引用本文： | 范大伟,周文戈,刘丛强,万方,邢印锁,刘景,李延春,谢鸿森.Phase Transition and EOS of Cinnabar （α-HgS） at High Pressure and High Temperature[J].中国物理快报,2009,26(4):180-183. |
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| 作者姓名： | 范大伟 周文戈 刘丛强 万方 邢印锁 刘景 李延春 谢鸿森 |
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| 作者单位： | [1]Laboratory for Study of the Earth＇s Interior and Geofluids, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002 [2]Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 [3]Graduate University of the Chinese Academy of Sciences, Beijing 100049 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 40873052, and the ＂Western Light＂ Project and Youth Innovative Foundation of Chinese Academy of Sciences. High Pressure Station is supported by Chinese Academy of Sciences under Grant Nos KJCX2-SW-N20 and KJCX2-SW-N03. |
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| 摘 要： | Phase relations and equation of state （EOS） of natural cinnabar （α-HgS） are investigated by high-pressure and high-temperature synchrotron x-ray powder diffraction. The unambiguous cinnabar-rocksalt structure phase boundaries are determined to be PI （GPa）=15.54- 0.014T（℃） and Pupper（GPa）= 23.84- 0.014T（℃） at 300-623K. With K1 fixed at 4, we obtain K0 = 37（4） GPa, （aK/aT）p= -0.025（2） GPaK-1, and α0 = 3.79（20） × 10-5 K-1 for the cinnabar phase of α-HgS. The （aK/aT）p and α0 of cinnabar phase are obtained for the first time. A nearly isotropic compression of cinnabar phase is observed by linear regressions.
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| 关 键 词： | 高温高压 硫化汞 朱砂 EOS 同步辐射X射线衍射 相变 状态方程 相位关系 |
| 收稿时间： | 2008-11-3 |
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