Development of the half-metal spin switch and its application tothe logic circuit
Project/Area Number |
20681016
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Research Category |
Grant-in-Aid for Young Scientists (A)
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Allocation Type | Single-year Grants |
Research Field |
Microdevices/Nanodevices
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Research Institution | Tohoku University |
Principal Investigator |
OOGANE Mikihiko Tohoku University, 大学院・工学研究科, 助教 (50396454)
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Project Period (FY) |
2008 – 2009
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Project Status |
Completed (Fiscal Year 2009)
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Budget Amount *help |
¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
Fiscal Year 2009: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2008: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
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Keywords | スピンエレクトロニクス / ハーフメタル / ホイスラー合金 / トンネル接合 / スピン注入磁化反転 / ナノ材料 / MBE,エピタキシャル / 超格子 / 超薄膜 / MBE, エピタキシャル |
Research Abstract |
Magnetic tunnel junctions (MTJs) with Co_2MnSi based half-metallic Heusler alloy electrodes and an MgO barrier showed very large tunnel magneto resistance (TMR) ratio of 1275% at low temperature and 350% at room temperature. This TMR ratio is the highest among the MTJs with Heusler alloy electrodes. The large TMR effect is desirable for application to the spin-switch device. In addition, the TMR ratio was successfully controlled by the voltage in the device that two MTJs were connected in series. This result indicates that the fabricated device can be used as the logic circuit.
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Report
(3 results)
Research Products
(59 results)
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[Journal Article] Structure, exchange stiffness, and magnetic anisotropy of Co2MnAlxSi1-x Heusler compounds2009
Author(s)
Takahide Kubota, Jaroslav Hamrle, Yuya Sakuraba, Oksana Gaier, Mikihiko Oogane, Akimasa Sakuma, Burkard Hillebr, s, Koki Takanashi,, Yasuo, o
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Journal Title
JOURNAL OF APPLIED PHYSICS 106
Related Report
Peer Reviewed
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[Journal Article] Tunnel magnetoresistance in epitaxially grown magnetic tunnel junctions using Heusler alloy electrode and MgO barrier2009
Author(s)
S Tsunegi, Y Sakuraba, M Oogane, N D Telling, L R Shelfold, E Arenholz, G van der Laan, R J Hicken, K Takanashi, Y, o
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Journal Title
J. Phys. D: Appl. Phys. 42
Related Report
Peer Reviewed
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[Journal Article] Evidence of local moment formation in Co-based Heusler alloys2008
Author(s)
N.D. Telling, P.S. Keatley, G. van der Laan, R.J. Hicken, E. Arenholz, Y. Sakuraba, M. Oogane, Y., o, K. Takanashi, A. Sakuma,, T. Miyazaki
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Journal Title
PHYSICAL REVIEW B 78
Pages: 184438-184438
Related Report
Peer Reviewed
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[Journal Article] Influence of the L21 ordering degree on the magnetic properties of Co2MnSi Heusler films2008
Author(s)
O. Gaier, J. Hamrle, S.J. Hermsdoerfer, H. Schultheis, B. Hillebr, s, Y. Sakuraba, M. Oogane,, Y., o
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Journal Title
JOURNAL OF APPLIED PHYSICS 103
Related Report
Peer Reviewed
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[Journal Article] Temperature dependence of the interface moments in Co2MnSi thin 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., o, K. Takanashi,, T. Miyazaki
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Journal Title
APPLIED PHYSICS LETTERS 92
Related Report
Peer Reviewed
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