| Paper Abstract and Keywords |
| Presentation |
2021-10-08 13:50
Current induced domain wall motion for magneto-optical light modulator with Gdx-Fe1-x magnetic nanowires.
Takuma Sotome (Tokai Univ.), Kenichi Aoshima (NHKstrl), Kazuto Hosaka (Tokyo Denki Univ.), Nobuhiko Funabashi, Ryo Higashida (NHKstrl), Yasunobu Akiyama (Tokai Univ.), Kenji Machida (NHKstrl) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
A magneto-optical light modulation element (MO element) using current-induced domain wall movement is composed of a nanomagnet (NM) and a Gd-Fe magnetic wire. An initial magnetic domain is generated on the Gd-Fe magnetic wire by NM. Optical modulation is performed by enlarging / reducing the initial magnetic domain with an electric current and reversing the magnetization. This time, we made a prototype MO element with different Gd-Fe composition (Gd24.5, Gd24.1%) and investigated the difference in domain wall movement characteristics. The MO element with Gd24.5% has a larger coercive force than the element with Gd24.1%, and the operating current is 1.1mA to 1.3mA, which is higher than the element with Gd24.1% (1.0mA), but the domain wall movement distance. Was large, and the region for optical modulation was 1.20μm, which was much larger than that of the device with Gd 24.1% (0.33μm). It was found that the Gd24.5% element can perform optical modulation in a larger area, which can greatly improve the optical utilization efficiency. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Electron holography / current-driven domain wall movement / magneto-optical Kerr effect / / / / / |
| Reference Info. |
ITE Tech. Rep., vol. 45, no. 28, MMS2021-33, pp. 13-18, Oct. 2021. |
| Paper # |
MMS2021-33 |
| Date of Issue |
2021-10-01 (MMS) |
| ISSN |
Print edition: ISSN 1342-6893 Online edition: ISSN 2424-1970 |
| Download PDF |
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| Conference Information |
| Committee |
IEICE-MRIS MMS |
| Conference Date |
2021-10-08 - 2021-10-08 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Online |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Recording Head, Spintronics, Solid State Memory, Media, etc. |
| Paper Information |
| Registration To |
MMS |
| Conference Code |
2021-10-MRIS-MMS |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Current induced domain wall motion for magneto-optical light modulator with Gdx-Fe1-x magnetic nanowires. |
| Sub Title (in English) |
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| Keyword(1) |
Electron holography |
| Keyword(2) |
current-driven domain wall movement |
| Keyword(3) |
magneto-optical Kerr effect |
| Keyword(4) |
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| Keyword(5) |
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| Keyword(6) |
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| 1st Author's Name |
Takuma Sotome |
| 1st Author's Affiliation |
Tokai University (Tokai Univ.) |
| 2nd Author's Name |
Kenichi Aoshima |
| 2nd Author's Affiliation |
NHK Science and Technology Research Laboratories (NHKstrl) |
| 3rd Author's Name |
Kazuto Hosaka |
| 3rd Author's Affiliation |
Tokyo Denki University (Tokyo Denki Univ.) |
| 4th Author's Name |
Nobuhiko Funabashi |
| 4th Author's Affiliation |
NHK Science and Technology Research Laboratories (NHKstrl) |
| 5th Author's Name |
Ryo Higashida |
| 5th Author's Affiliation |
NHK Science and Technology Research Laboratories (NHKstrl) |
| 6th Author's Name |
Yasunobu Akiyama |
| 6th Author's Affiliation |
Tokai University (Tokai Univ.) |
| 7th Author's Name |
Kenji Machida |
| 7th Author's Affiliation |
NHK Science and Technology Research Laboratories (NHKstrl) |
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| Speaker |
Author-1 |
| Date Time |
2021-10-08 13:50:00 |
| Presentation Time |
25 minutes |
| Registration for |
MMS |
| Paper # |
MMS2021-33 |
| Volume (vol) |
vol.45 |
| Number (no) |
no.28 |
| Page |
pp.13-18 |
| #Pages |
6 |
| Date of Issue |
2021-10-01 (MMS) |