Observation of current-driven domain wall motions in ferromagnetic naowaires
| Project/Area Number |
17H04795
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Nanostructural physics
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| Research Institution | Gifu University |
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Principal Investigator |
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥26,650,000 (Direct Cost: ¥20,500,000、Indirect Cost: ¥6,150,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2017: ¥23,530,000 (Direct Cost: ¥18,100,000、Indirect Cost: ¥5,430,000)
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| Keywords | 磁性ワイヤー / 磁壁 / 磁化反転 / 磁区 / スピントロニクス / 磁性 / マイクロ・ナノデバイス / 磁性ナノワイヤー / 磁壁移動 / スピンエレクトロニクス |
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| Outline of Final Research Achievements |
We investigated the magnetic properties and electrical conduction properties in cylindrical metal-ferromagnetic nanowires. In the research, the following results were obtained. (1) Elucidation of changes in magnetic properties depending on aspect ratio of ferromagnetic nanowires, (2) Elucidation of magnetization reversal behavior in ferromagnetic/nonmagnetic/ferromagnetic nanowires with three-layer structure, (3) Observation of the magnetoresistance effect in single magnetic nanowire and elucidation of its magnetic domain formation.
As other research, we investigated that (4) Elucidation of the correlation between microstructure and magnetic properties in ferromagnetic films composed with oxide magnetic nanoparticles, (5) Analysis of magnetization structures and elucidation of spin dynamics by using micromagnetic simulations. These results could clarify the magnetic properties and spin dynamics in antiferromagnet nanowires and magnetized synthetic antiferromagnetic coupling structure.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究の成果の学術的意義は、円柱形の磁性ワイヤーにおける結晶構造と磁気特性の相関を明らかにし、また数値計算を用いることで、磁性ワイヤーにおける磁化反転挙動における磁区生成や磁壁移動について明らかにすることができたことである。社会的意義としては、磁性ワイヤーを用いた次世代磁気メモリや磁気センサの応用開発への基盤となる研究を実施できた点である。
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Report
(4 results)
Research Products
(19 results)
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[Journal Article] Magnetic Scattering in Ni Wires Fabricated on Ferroelectric LiNbO3 Substrate for Magnetic Sensor Application2019
Author(s)
Ryo Nakamura, Shunya Saegusa, Satoru Suzuki, Aiko Nakao, Yuichi Utsumi, Takuo Ohkochi, Masaki Oura, Yukako Takizawa, Tsunemasa Saiki, Taekhyeon Lee, Kab-Jin Kim, Keisuke Yamada, Takeshi Ogasawara, and Akinobu Yamaguchi
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Journal Title
Sensors and Materials
Volume: 31
Issue: 10
Pages: 3007
DOI
ISSN
0914-4935, 2435-0869
Year and Date
2019-10-18
Related Report
Peer Reviewed / Int'l Joint Research
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