PRESSURE-INDUCED STRUCTURAL PHASE-TRANSITION IN SULFUR AT 83-GPA
PRESSURE-INDUCED STRUCTURAL PHASE-TRANSITION IN SULFUR AT 83-GPA
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DOI：
10.1103/physrevb.48.6862
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发表时间：
1993-09-01
影响因子：
3.7
通讯作者：
KAWAMURA, H
中科院分区：
文献类型：
--
作者：
AKAHAMA, Y;KOBAYASHI, M;KAWAMURA, H
用角色散x射线衍射法研究了硫在90 GPa压力下的相序。具有S8环分子的正交硫（S-I）在6 ~ 55 GPa之间转变为高压晶相（S-II）。第二次结构相变发生在83+/-2 GPa。最高压力相（S-III）可以解释为基心正交晶格。这个晶格与硒的金属高压相中的晶格是同构的。Luo等人报道的硫的金属化归因于第二次转变。
The pressure-induced phase sequence of sulfur up to 90 GPa has been studied by an angle-dispersive x-ray-diffraction method. The orthorhombic sulfur (S-I) with S8 cyclic molecules transforms to a high-pressure crystal phase (S-II) between 6 and 55 GPa. The second structural phase transition takes place at 83+/-2 GPa. The highest-pressure phase (S-III) can be explained as a base-centered orthorhombic lattice. This lattice is isomorphous to that in the metallic high-pressure phase of selenium. Metallization for sulfur reported by Luo et al. is ascribed to the second transition.