The synthesis of new quasicrystals in sp-electron alloy systems and their metal-insulator transitions
| Project/Area Number |
23760619
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Physical properties of metals
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| Research Institution | Hokkaido University |
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Principal Investigator |
KASHIMOTO Shiro 北海道大学, 大学院・工学研究院, 助教 (60329852)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | 準結晶 / 近似結晶 / sp電子系 / 電気抵抗 / 金属-絶縁体転移 / 価数揺動 / 重い電子系 / 金属ー絶縁体転移 / 金属－絶縁体転移 |
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| Research Abstract |
In this study, we have searched quasicrystals and approximantsin new alloy systems including sp-electron elements (Al, Si, Ge, etc.) and sought after new physical properties, e.g. a possibility of metal-insulator transitions in the quasiperiodic structure. We have found new quasicrystals and approximants in some alloy systems. Although we cannot yet find the metal-insulator transition because the concentration of Si or Geisn't over 50% in these alloys, we have got new results: a intermediate valence of Yb in the Pd 48Ge 36Yb 16 approximant of an icosahedral quasicrystal, spin-glass-type ordering in the Mn 76Si 18Cr 6 approximant of a dodecagonal quasicrystal and so on.
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Report
(3 results)
Research Products
(17 results)
