Development of a 7 tesla-class tubular MgB2 bulk magnet with a large bore to achieve a high-resolution MRI device for a mouse experiment
| Project/Area Number |
18K04920
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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 29010:Applied physical properties-related
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| Research Institution | Iwate University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
藤代 博之 岩手大学, 理工学部, 教授 (90199315)
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 超伝導バルク磁石 / 二ホウ化マグネシウム / 捕捉磁場 / MgB2超伝導体 / バルク磁石 / NMR / MgB2 |
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| Outline of Final Research Achievements |
We found out the fabrication condition for an infiltration-reaction processed MgB2 bulk ring trapping 2 tesla-class magnetic field stronger than permanent magnet. A carbon doping improved the trapped field properties of MgB2 bulk around 10 K, a typical operating temperature. We achieved a record-high trapped field of 5.6 tesla for triple-stacked MgB2 disk bulk doped with titanium. For the first time, we succeeded in observing a proton NMR (nuclear magnetic resonance) signal under a magnetic field trapped by a tubular MgB2 bulk magnet, which strongly suggests a potential ability of an MgB2 bulk magnet as a magnetic pole of bench-top NMR device.
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| Academic Significance and Societal Importance of the Research Achievements |
超伝導バルク磁石の社会実装を進めるためには，磁場強度はもちろんのこと用途に応じたサイズや形状を実現する必要がある。従って，低コストである浸透法で大型かつリング形状のMgB2バルクを作製可能となったことは，任意形状のバルクを作製できることを意味しており意義がある。また，炭素やチタンなど不純物元素の添加によってMgB2バルク磁石の特性が向上したことやMgB2バルク磁石中でプロトンの核磁気共鳴信号が観測できたことにより，永久磁石との差別化がより一層明確になったことも超伝導バルク磁石の社会実装を進める上で重要な点である。
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Report
(5 results)
Research Products
(15 results)
