| Presentation | 2017-10-04 Effect of multi-layered magnetic media for recording volumetric magnetic hologram Naoki Hoshiba, Zen Shirakashi, Taichi Goto, Hiroyuki Takagi, Yuichi Nakamura, Lim Pang Boey, Hironaga Uchida, Mitsuteru Inoue, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have studied to realize rewritable magnetic hologram memory using magnetic garnet which is a stable material. Improvement of the diffraction efficiency of the magnetic medium is needed for improving the quality of the reconstructed image. However, it was pointed out that the recorded information in interference fringe was disappeared due to the diffusion of heat excessively generated near the surface layer of the magnetic medium. To avoid this effect of thermal diffusion, we proposed the multi-layered structure in which the transparent heat sink layers (HSL) were inserted in the magnetic medium. Based on the numerical simulation, the effect of thermal diffusion could be suppressed by the HSL medium, and the diffraction efficiency could be improved. However, since the strength of stray magnetic field may be decreased in the thin magnetic layers, the diffraction efficiency of HSL medium was lower than that of single layer medium. This small stray magnetic field was compensated by magnetic assist recording, and the diffraction efficiency higher than that of single layer film was obtained in HSL medium. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Magnetic hologram / Thermomagnetic recording / Magnetic garnet / Multilayered structure |
| Paper # | CPM2017-63 |
| Date of Issue | 2017-09-27 (CPM) |
| Conference Information | |
| Committee | CPM |
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| Conference Date | 2017/10/4(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Fumihiko Hirose(Yamagata Univ.) |
| Vice Chair | Mayumi Takeyama(Kitami Inst. of Tech.) |
| Secretary | Mayumi Takeyama(Nihon Univ.) |
| Assistant | Yuichi Akage(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Component Parts and Materials |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effect of multi-layered magnetic media for recording volumetric magnetic hologram |
| Sub Title (in English) | |
| Keyword(1) | Magnetic hologram |
| Keyword(2) | Thermomagnetic recording |
| Keyword(3) | Magnetic garnet |
| Keyword(4) | Multilayered structure |
| 1st Author's Name | Naoki Hoshiba |
| 1st Author's Affiliation | Toyohashi University of Technology(Toyohashi Univ.) |
| 2nd Author's Name | Zen Shirakashi |
| 2nd Author's Affiliation | Toyohashi University of Technology(Toyohashi Univ.) |
| 3rd Author's Name | Taichi Goto |
| 3rd Author's Affiliation | Toyohashi University of Technology(Toyohashi Univ.) |
| 4th Author's Name | Hiroyuki Takagi |
| 4th Author's Affiliation | Toyohashi University of Technology(Toyohashi Univ.) |
| 5th Author's Name | Yuichi Nakamura |
| 5th Author's Affiliation | Toyohashi University of Technology(Toyohashi Univ.) |
| 6th Author's Name | Lim Pang Boey |
| 6th Author's Affiliation | Toyohashi University of Technology(Toyohashi Univ.) |
| 7th Author's Name | Hironaga Uchida |
| 7th Author's Affiliation | Toyohashi University of Technology(Toyohashi Univ.) |
| 8th Author's Name | Mitsuteru Inoue |
| 8th Author's Affiliation | Toyohashi University of Technology(Toyohashi Univ.) |
| Date | 2017-10-04 |
| Paper # | CPM2017-63 |
| Volume (vol) | vol.117 |
| Number (no) | CPM-224 |
| Page | pp.pp.19-24(CPM), |
| #Pages | 6 |
| Date of Issue | 2017-09-27 (CPM) |