| 研究課題/領域番号 |
23K22808
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| 補助金の研究課題番号 |
22H01538 (2022-2023)
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| 研究種目 |
基盤研究(B)
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| 配分区分 | 基金 (2024)
補助金 (2022-2023) |
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| 応募区分 | 一般 |
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| 審査区分 |
小区分21060:電子デバイスおよび電子機器関連
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| 研究機関 | 東北大学 |
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研究代表者 |
アルマダウィ ミフタ (ALMAHDAWI MUFTAH) 東北大学, 先端スピントロニクス研究開発センター, 助教 (90729576)
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| 研究分担者 |
大兼 幹彦 東北大学, 工学研究科, 教授 (50396454)
野崎 友大 国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 研究員 (10610644)
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| 研究期間 (年度) |
2022-04-01 – 2025-03-31
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| 研究課題ステータス |
採択後辞退 (2024年度)
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| 配分額 *注記 |
17,550千円 (直接経費: 13,500千円、間接経費: 4,050千円)
2024年度: 4,940千円 (直接経費: 3,800千円、間接経費: 1,140千円)
2023年度: 5,200千円 (直接経費: 4,000千円、間接経費: 1,200千円)
2022年度: 7,410千円 (直接経費: 5,700千円、間接経費: 1,710千円)
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| キーワード | Magnetic sensor / Chaos / スピントロニクス / センサ / spintronics / sensor / memory / Spintronics / Sensing / Computing |
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| 研究開始時の研究の概要 |
New information processing techniques are needed for Internet-of-Things (IoT) applications. The spintronic-based reservoir computing (RC) have many merits compared to other PRC systems: the compatibility with semiconductor large-scale integration, long endurance, and sensing capability. State variables of ferro- and
antiferro-magnetism in spintronic devices offer a strong advantage for nonlinear dynamics, non-volatility, and low-power operation. Additionally, magnetic spintronic sensors can directly interface with many applications from automotive to biomedical domains.
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| 研究実績の概要 |
On the way to realizing the "Sensoron", fusing sensing and computation, we succeeded in demonstrating the possibility of computing capacity in magnetic sensors based on tunneling magnetoresistance effect.
We proved that topological features called vortex cores exists in the sensing region of magnetic TMR sensors. These cores exhibit chaotic dynamics and rapid core reversals during their response to magnetic field changes. The presence of highly-nonlinear dynamics of the topological vortex cores provide computing capacity to the temporal magnetic field inputs, and they can be used to perform time-dependent simple signal processing.
We also succeded in characterizing the lossy dynamics of magnetic sensing layers. We developed a novel magnetic measurement method based on modulating the response of vibrating sample magnetometer (VSM). We could measure the complex magnetic ac susceptibility of sensor components for the first time. We used this method to characterize the response of domain walls to external field perturbations. We showed the dynamic losses are a signature of a short-term memory effect from domain walls.
These achievements have been published in international conferences and journals, and they generated a strong interest from industrial and academic magnetics community.
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| 現在までの達成度 (段落) |
翌年度、交付申請を辞退するため、記入しない。
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| 今後の研究の推進方策 |
翌年度、交付申請を辞退するため、記入しない。
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