Research on light localization in ferromagnetic metal nanoparticles and low energy magnetization reversal
| Project/Area Number |
24656010
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
Shimizu Hiromasa 東京農工大学, 工学(系)研究科(研究院), 准教授 (50345170)
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 強磁性体 / 磁気光学効果 / 異種基板への製膜 / 磁気異方性 / 磁化反転 / 磁性ガーネット / 金属 / ナノ粒子 |
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| Outline of Final Research Achievements |
We investigated the magneto-optical (MO) effect with localized surface plasmon resonance (LSPR) on ferromagnetic metal(FM) nanoparticles. We estimated the electric-field enhancement of the FM nanoparticles caused by LSPR based on Mie scattering theory and compared it with that of Au nanoparticles. The electric-field enhancement of the FM nanoparticles was 15-17, which is half of that of the Au nanoparticles. In order to explain the calculated results, we prepared FM nanoparticles by a self-assembly process. We measured the optical transmission spectra and Faraday effect of the FM nanoparticles. Although remarkable MO enhancement was not observed, we found characteristic MO spectra and a peak shift at wavelengths longer than 800nm in samples. We investigated the size effect and reproduced the experimental results. We concluded that localized plasmons of FM nanoparticles can produce electric-field enhancement, which is not enough to increase the MO effect.
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Report
(5 results)
Research Products
(36 results)
