| Project/Area Number |
15K13347
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Crystal engineering
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
Sasaki Satoshi 東京工業大学, 科学技術創成研究院, 教授 (10162364)
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| Co-Investigator(Kenkyū-buntansha) |
奥部 真樹 東北大学, 金属材料研究所, 准教授 (10397060)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | Ｘ線共鳴磁気散乱 / 円偏光 / 不対電子密度 / Ｘ線弾性散乱 / 放射光 / ４軸回折計 / 磁気構造解析 / 希土類鉄ガーネット |
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| Outline of Final Research Achievements |
The X-ray intensity difference between right- and left-handed circular polarization makes it possible to detect the magnetic electron-density in crystals with the aid of both resonant X-ray magnetic scattering (RXMS) and non-resonant ones. Our analysis is characterized in that it uses circular polarizations as a basis for initial and final states of X-ray scattering (CP-RXMS). Polarization dependence of the asymmetric ratio between right- and left-handed polarized scattering amplitudes has revealed that resonant and non-resonant magnetic scatterings can be observed simultaneously.
In this study, synchrotron X-ray intensity experiments were conducted on Gd iron garnet (GdIG) and magnetite (Fe3O4) at the pre-edge of the Fe K absorption edge. We observed the presence of hybridization of the magnetic electron orbitals as well as of the resonant magnetic Fe3+. The proposed method has a potential to be widely used in the crystal structure analysis.
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