2010 Fiscal Year Final Research Report
The void and meso-scale structure in the liquid chalcogens
| Project/Area Number |
20540366
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | Niigata University |
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Principal Investigator |
MARUYAMA Kenji Niigata University, 自然科学系, 准教授 (40240767)
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| Co-Investigator(Kenkyū-buntansha) |
OHTORI Norikazu 新潟大学, 自然科学系, 教授 (20272859)
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| Project Period (FY) |
2008 – 2010
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| Keywords | X線回折 / 液体カルコゲン / 液体構造解析 / 中距離構造 |
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| Research Abstract |
The metal to nonmetal transition occurs in the liquid Se and liquid Se-Te mixtures with increasing temperature. The structural change at this transition was investigated with X-ray scattering measurements at high temperature and under high pressure by using the BL28B2 beam line at SPring8. In order to investigate the intermediate scale structural change, the reverse Monte Carlo technique and the void structure analysis with Delaunay dividing method were developed. It was found that around the transition region the structure of chalcogen chains changed from helix to zigzag or ring ones.
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