| Project/Area Number |
15H03718
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | Doshisha University (2017)
Kochi University (2015-2016) |
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Principal Investigator |
Kodama Kazuto 同志社大学, 研究開発推進機構, 嘱託研究員 (00153560)
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| Co-Investigator(Kenkyū-buntansha) |
山本 裕二 高知大学, 教育研究部自然科学系理学部門, 教授 (00452699)
齋藤 武士 信州大学, 学術研究院理学系, 准教授 (80402767)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥11,960,000 (Direct Cost: ¥9,200,000、Indirect Cost: ¥2,760,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
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| Keywords | 環境磁気 / 磁性ナノ粒子 / 磁化率 / 気候変動 / 岩石磁気 / 線形応答 / ナノ磁性粒子 / パルス磁気緩和 / 粒子サイズ |
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| Outline of Final Research Achievements |
This study consists of developing instrumentation to investigate the dynamic magnetization process of magnetic nano-particles and a series of experiments using such new instrumentation in both time domain and frequency domain. In the time domain, we measured free decay of magnetization induced by a pulse magnetic field. Based on linear transformation theory, such time-domain data can be transformed to those in the frequency domain from which broad-band frequency spectrum can result. Moreover, such measurements in the pulse magnetic field was found to be a rapid and easy-to-use method for the determination of magnetic hysteresis instead of the conventional method with VSM that is usually quite time-consuming.
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