Fabrication of heghly efficient spin source materials by nanostructure control
Project Area | Creation and control of spin current |
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 |
Review Section |
Science and Engineering
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Research Institution | Tohoku University |
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)
三谷 誠司 東北大学, 金属材料研究所, 准教授 (20250813)
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Project Period (FY) |
2007 – 2010
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Project Status |
Completed (Fiscal Year 2010)
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Budget Amount *help |
¥85,400,000 (Direct Cost: ¥85,400,000)
Fiscal Year 2010: ¥19,000,000 (Direct Cost: ¥19,000,000)
Fiscal Year 2009: ¥23,700,000 (Direct Cost: ¥23,700,000)
Fiscal Year 2008: ¥23,700,000 (Direct Cost: ¥23,700,000)
Fiscal Year 2007: ¥19,000,000 (Direct Cost: ¥19,000,000)
|
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 / スピン偏極 / ナノ構造 / ナノ粒子 / 磁気抵抗効果 / スピンエレクトロニクス3 |
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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Report
(6 results)
Research Products
(99 results)
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[Journal Article] Fabrication of perpendicularly magnetized magnetic tunnel junctions with L1_0-CoPt/Co_2MnSi hybrid electrode2010
Author(s)
T.Hiratsuka, G.Kim, Y.Sakuraba, T.Kubota, K.Kodama, N.Inami, H.Naganuma, M.Oogane, T.Nakamura, K.Takanashi, Y.Ando
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Journal Title
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Peer Reviewed
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[Journal Article] Transmission of electric signals by spin-wave interconversion in a magnetic insulator2010
Author(s)
Y.Kajiwara, K.Harii, S.Takahashi, J.Ohe, K.Uchida, M.Mizuguchi, H.Umezawa, H.Kawai, K.Ando, K.Takanashi, S.Maekawa, E.Saitoh
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Journal Title
Nature 464
Pages: 262-266
Related Report
Peer Reviewed
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[Journal Article]2009
Author(s)
S. Bosu, Y. Sakuraba, K. Saito, H. Wang, S. Mitani, K. Takanashi
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Peer Reviewed
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[Journal Article] Structure, exchange stiffness, and magnetic anisotropy of Co_2MnAl_xSi_<1-x> Heusler compounds2009
Author(s)
T.Kubota, J.Hamrle, Y.Sakuraba, O.Gaier, M.Oogane, A.Sakuma, B.Hillebrands, K.Takanashi, Y.Ando
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Peer Reviewed
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[Journal Article] Temperature dependence of the interface moments in Co_2MnSi thn films2008
Author(s)
N. D. Telling, P. S. Keatley, L. R. Shelford, E. Arenholz, G. van der Laan, R. J. Hicken, Y. Sakuraba, S. Tsunegi, M. Oogane, Y. Ando, K. Takanashi, and T. Miyazaki
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Journal Title
Applied Physics Letters 92
Related Report
Peer Reviewed
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[Journal Article] Evidence of local magnetic moment formation in Co-based Heusler alloys2008
Author(s)
N. D. Telling, R S. Keatley, G. van der Laan, R. J. Hicken, E, Arenholz, Y. Sakuraba, M. Oogane, Y. Ando, K. Takanashi, A. Sakuma, and T. Miyazaki
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