Study on collinear magnetic volume hologram memory using magnetic nanostructure photonic crystals
| Project/Area Number |
23246060
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Toyohashi University of Technology |
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Principal Investigator |
LIM Pang Boey 豊橋技術科学大学, 国際教育センター, 准教授 (40502597)
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| Co-Investigator(Kenkyū-buntansha) |
INOUE Mitsuteru 豊橋技術科学大学, 大学院工学研究科, 教授 (90159997)
TAKAGI Hiroyuki 豊橋技術科学大学, 大学院工学研究科, 講師 (40390463)
BARYSHEV Alexander 豊橋技術科学大学, エレクトロニクス先端融合研究所, テニュアトラック准教授 (70402667)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥44,980,000 (Direct Cost: ¥34,600,000、Indirect Cost: ¥10,380,000)
Fiscal Year 2013: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2012: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
Fiscal Year 2011: ¥29,250,000 (Direct Cost: ¥22,500,000、Indirect Cost: ¥6,750,000)
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| Keywords | 磁気ホログラム / ホログラムメモリ / コリニア方式 / 短パルスレーザ / ガーネットメディア / 磁性フォトニック結晶 / ノイズ低減 / コリニアホログラム方式 / 電気・電子材料 / 回折効率 / 多層膜構造 / 多重記録 |
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| Research Abstract |
To achieve a high-efficiency magnetic hologram medium with rewritability, the following study was performed by experiments and computer simulation. The recording condition and the structure of medium were investigated using a two-beam interference method. The use of laser with the short pulse width of 50 picosecond was effecitve to obtain a deep and clear fringe compared to that of the 25 nanosecond laser. In addition, the use of a multilayered film structure including the thermal diffusion layers was found to be effective to form the fringe deeper than usual single film and showed high diffraction efficiency. On the other hand, the hybrid media combining with magnetic photonic crystal, the deep and clear interference fringes could be formed to achieve large diffraction efficiency because the light became a standing wave in the magnetic film. As a result, the reconstructed image became brighter more than twice compared to that of the usual single layer film in collinear holography.
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Report
(4 results)
Research Products
(99 results)
