High spin polarization current-perpendicular-to-plane magnetoresistive device using atomic-layer materials
| Project/Area Number |
18K13985
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 26010:Metallic material properties-related
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| Research Institution | National Institutes for Quantum and Radiological Science and Technology |
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Principal Investigator |
Li Songtian 国立研究開発法人量子科学技術研究開発機構, 高崎量子応用研究所 先端機能材料研究部, 主任研究員(定常) (90805649)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 磁気抵抗素子 / 原子層物質 / グラフェン / ホイスラー合金 / 高スピン偏極材料 / 二次元物質 / 高スピン偏極率 / 六方晶窒化ホウ素 / 高スピン偏極率材料 / 層状物質 / ハーフメタル / スピンエレクトロニクス / スーピントロ二クス |
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| Outline of Final Research Achievements |
For the application of next-generation magnetic memory such as HDD and MRAM, it is very crucial to realize an ultra-thin current-perpendicular-to-plane magnetoresistive device which has a balance between the magnetoresistive ratio and the resistance area product. In this study we investigated the graphene, an atomic layer material, as a potential new spacer material to replace the conventional oxide and metal spacer materials in magnetoresistive device. The growth technology of graphene on highly spin polarized Heusler alloy were established. A new type of magnetoresistive device consisting of graphene spacer and ferromagnetic Heusler alloy electrodes were developed in this study.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究のホイスラー合金/グラフェン/ホイスラー合金磁気抵抗素子の研究成果は、磁気メモリの超高密度化を可能にするブレークスルー技術であり、次世代情報デバイスの省エネ化やスピントロ二クス技術の発展に貢献することが期待できる。
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Report
(4 results)
Research Products
(24 results)
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[Journal Article] Graphene/Half‐Metallic Heusler Alloy: A Novel Heterostructure toward High‐Performance Graphene Spintronic Devices2020
Author(s)
S. Li, K. V. Larionov, Z. I. Popov, T. Watanabe, K. Amemiya, S. Entani, P. V. Avramov, Y. Sakuraba, H. Naramoto, P. B. Sorokin, and S. Sakai
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Journal Title
Advanced Materials
Volume: 32
Issue: 6
Pages: 1905734-1905734
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Spectroscopic studies of graphene/Heusler alloy heterostructure by using XMCD and TRHEPD2021
Author(s)
Li Songtian, songtian li, K.V. Larionov , P. B. Sorokin, K. Amemiya, Entani Shiro, Y. Sakuraba, I. Mochizuki, K. Wada, Kawasuso Atsuo, Sakai Seiji
Organizer
低速陽電子実験施設研究会
Related Report
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[Presentation] Electronic and magnetic properties of graphene/Co2Fe(Ge0.5Ga0.5) Heusler alloy heterostructure2019
Author(s)
Songtian Li, Konstantin V. Larionov, Zakhar I. Popv, Yoichi Yamada, Kenta Amemiya, Shiro Entani, Yuya Sakuraba, Hiroshi Naramto, Pavel B. Sorokin, and Seiji Sakai
Organizer
The 66th JSAP Spring Meeting, 2019
Related Report
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[Presentation] Preparation and characterization of a novel heterostructure of graphene/Co2Fe(Ge0.5Ga0.5)for high-performance spintronic device application2018
Author(s)
S. Li, K. Larionov, T. Watanabe, S. Entani, Y. Yamada, P. B. Sorokin, P. V. Avramov, Y.Sakuraba, K. Amemiya, H. Naramoto, and S. Sakai
Organizer
2018 NIMS Academic Symposium
Related Report
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