2023 Fiscal Year Final Research Report
Three-dimensional magnetic modification by using energy in-plantation process and its device aplication
| Project/Area Number |
20K12497
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 80040:Quantum beam science-related
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| Research Institution | Osaka Metropolitan University (2022-2023)
Osaka Prefecture University (2020-2021) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
堀 史説 大阪公立大学, 工学(系)研究科(研究院), 准教授 (20275291)
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| Project Period (FY) |
2020-04-01 – 2024-03-31
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| Keywords | 照射誘起強磁性 / クラスターイオンビーム / イオン注入 / 磁性ナノ粒子 |
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| Outline of Final Research Achievements |
We have tried to develop a fabrication technique for three-dimensional gradient magnetic structures using various types of high-energy ion beam irradiation. Also, their application to magnetic exchange coupling devices with a new principle of operation have been investigated. In addition, we have developed materials for composite nanocluster magnetic materials, which will be utilized as the cap layer of the designed three-dimensional magnetic structure.
As a result, we found that cluster ion beam irradiation was an effective method to control the magnetic depth profile of the ultra-surface region of magnetic thin film media, and that magnetic ions are implanted into the silica layer to stabilize the magnetic layer on the polar surface. The combination of these techniques with micro-ion beam technology, suggests the possibility of constructing a three-dimensional locally graded magnetic structure.
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| Free Research Field |
磁気物性，高エネルギー粒子線照射
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| Academic Significance and Societal Importance of the Research Achievements |
物質表面に3次元磁気構造を人工的に構築する技術の開発とそれを磁気交換結合素子へ展開することにより，従前には無い磁気機能をもつ新奇なデバイスの開発が可能になると推測される．
本研究では，高エネルギーマイクロイオンビームとクラスターイオンビーム照射を利用した3次元局所傾斜磁気構造構築技術の開発を目指し，その磁気構造の構築，評価，物質開発に取り組んだ．結果として，深さ方向へポストプロセスで磁気構造を作りこむことが可能な，高エネルギークラスターイオンビーム照射の活用が，効果的であることを見出した．また，その構造評価技術として深さ方向XMCD評価とそのプロファイル解析技術に関して多様な知見を得た．
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