2016 Fiscal Year Final Research Report
Development of iron based materials with three dimensional network structures toward the realization of high Tc superconductivity
| Project/Area Number |
15K17705
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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 |
Condensed matter physics II
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Keywords | 鉄系超伝導 / 次元性 / 構造解析 / 112型 / 放射光Ｘ線 / 新構造 |
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| Outline of Final Research Achievements |
We explored novel iron based superconductors with three dimensional network structures, which sharply differs from the precedented iron based superconductors with two dimensional network structures. The candidate materials Can(n+1)/2(Fe1-xPtx)(2+3n)Ptn(n-1)/2As(n+1)(n+2)/2 (n = 2, 3) did not show bulk superconductivity in the present works, however, n = 3 system exhibited the non-bulk superconductivity with Tc ~ 30 K. Our further experimental studies have clarified two unprecedented 112-type iron arsenides with the chemical composition of Ca1-xLaxFe-yPdyAs2, which are the isostructural materials with Ca1-xLaxFeAs2 with Tc = 34 K. From the comprehensive studies between the synchrotron X-ray diffraction and the XAFS experiments, we clarified that they are the parent materials with the potential toward the realization of high Tc superconductivity.
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| Free Research Field |
固体化学
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