2010 Fiscal Year Final Research Report
Fabrication of heghly efficient spin source materials by nanostructure control
| Project Area | Creation and control of spin current |
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| Project/Area Number |
19048004
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
TAKANASHI Koki 東北大学, 金属材料研究所, 教授 (00187981)
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| Co-Investigator(Kenkyū-buntansha) |
MIZUGUCHI Masaki 東北大学, 金属材料研究所, 准教授 (50397759)
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| Project Period (FY) |
2007 – 2010
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| Keywords | 磁性 / スピンエレクトロニクス / ナノ材料 / スピン流 / 物性機能 |
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| Research Abstract |
Fabrication of highly efficient spin source aterials is an important issue for creation and control of spin current that is the flow of spin angular momentum. In this project, we fabricate highly spin-polarized / highly efficient spin soruce by nanostructure control. We achieve large magnetoresistance ratio at room temperature for giant magnetoresistance pillars with full-Heusler Co_2MnSi layers. We also successfully observed giant spin Hall effect in nanostructured devices with a Au Hall cross and an FePt perpendicular spin inhector, and carried out the systematic investigation of spin Hall effect in impurity doped-Au. In addision, the enhancement of spin relaxation time was observed in nanoparticles by measuring the magneto-transport properties in Fe, Cr, and Au nanoparticles.
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