BETA-PO PHASE OF SULFUR AT 162 GPA - X-RAY-DIFFRACTION STUDY TO 212 GPA
BETA-PO PHASE OF SULFUR AT 162 GPA - X-RAY-DIFFRACTION STUDY TO 212 GPA
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DOI：
10.1103/physrevlett.71.2943
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发表时间：
1993-11-01
影响因子：
8.6
通讯作者：
RUOFF, AL
中科院分区：
文献类型：
--
作者：
LUO, H;GREENE, RG;RUOFF, AL
利用金刚石压腔技术和强大的同步辐射光源，对硫进行了能量色散X射线衍射研究，发现硫在162+/-5 GPa处发生了向新相的转变。根据与d间距和测量的衍射峰的一致性，该新相被指标化为β-Po结构。这与已发表的关于Se和Te高压相的结果是一致的。完全回收的硫磺的拉曼光谱表明分子结构发生了永久性的变化。本文是首次对100 Gpa以上的低原子序数材料进行结构测定的实验结果。
Using diamond anvil cell techniques and powerful synchrotron sources, we carried out an energy dispersive x-ray diffraction study on sulfur to 212 GPa and detected a transition to a new phase at 162+/-5 GPa. This new phase has been indexed as the beta-Po structure based on agreement with the d spacings and the measured diffraction peaks. This is consistent with the published results on high pressure phases of Se and Te. The Raman spectra of the fully recovered sulfur indicate permanent changes in the molecular structure. This paper represents the first experimental results in which a structural determination has been made for the low-atomic-number materials above 100 GPa.