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KAKEN_26600016seika.pdf
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:634.6 KB
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:Jan 6, 2017 |
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局在表面プラズモン共鳴に伴う高周波高電場を用いた磁気異方性制御及び磁気秩序操作
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キョクザイ ヒョウメン プラズモン キョウメイ ニ トモナウ コウシュウハ コウデンバ オ モチイタ ジキ イホウセイ セイギョ オヨビ ジキ チツジョ ソウサ
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Kyokuzai hyomen purazumon kyomei ni tomonau koshuha kodenba o mochiita jiki ihousei seigyo oyobi jiki chitsujo sosa
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Control of magnetic anisotropy and manipulation of magnetism using high-frequency high electric field due to localized surface plasmon resonance
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佐藤, 徹哉
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サトウ, テツヤ
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Sato, Tetsuya
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慶應義塾大学・理工学部・教授
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Research team head
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科研費研究者番号 : 20162448
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2016
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科学研究費補助金研究成果報告書
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2015
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Auナノ構造体の局在表面プラズモン共鳴(LSPR)に伴って生じる高周波高電場により強磁性体の磁気異方性制御と磁気異方性変化を通した磁気秩序操作を目指した。Auナノ構造体が埋め込まれたCoフェライトのファラデー回転角の磁場依存性において保磁力がLSPR波長で顕著に減少した。またマグネタイト粒子/Au粒子混合試料では, LSPR近傍波長のレーザー照射により小さな磁化の変化を観測した。前者はLSPRを用いた磁気異方性制御の可能性を示唆し, 後者は磁気異方性変化を通した磁気秩序操作の可能性を示唆する。
This study aims to control the magnetic anisotropy of ferromagnetic materials and manipulate the magnetic ordering through change in magnetic anisotropy by high-frequency high magnetic field that is generated with localized surface plasmon resonance of nanostructures of Au. In magnetic field dependent Faraday rotation angle of Co ferrite with nanostructures of Au, the coercive force significantly decreased around LSPR wavelength. In the magnetite particles/Au particles mixture sample, small change in magnetization was observed under laser irradiation of wavelength close to the LSPR. The former shows the possible control of magnetic anisotropy using LSPR, and the latter indicates the possible manipulation of magnetic order through the change in magnetic anisotropy.
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研究種目 : 挑戦的萌芽研究
研究期間 : 2014～2015
課題番号 : 26600016
研究分野 : 磁気物性工学
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