WEKO3
アイテム
Nanometer-size hard magnetic ferrite exhibiting high optical-transparency and nonlinear optical-magnetoelectric effect
http://hdl.handle.net/2261/59068
http://hdl.handle.net/2261/5906832fa9388-6737-46a8-83e3-b377959317ef
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
srep14414.pdf (1.2 MB)
|
|
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2016-01-06 | |||||
| タイトル | ||||||
| タイトル | Nanometer-size hard magnetic ferrite exhibiting high optical-transparency and nonlinear optical-magnetoelectric effect | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | journal article | |||||
| 著者 |
Ohkoshi, Shin-ichi
× Ohkoshi, Shin-ichi× Namai, Asuka× Imoto, Kenta× Yoshikiyo, Marie× Tarora, Waka× Nakagawa, Kosuke× Komine, Masaya× Miyamoto, Yasuto× Nasu, Tomomichi× Oka, Syunsuke× Tokoro, Hiroko |
|||||
| 著者所属 | ||||||
| 著者所属 | Department of Chemistry, School of Science, The University of Tokyo | |||||
| 著者所属 | ||||||
| 著者所属 | CREST, JST | |||||
| 著者所属 | ||||||
| 著者所属 | Division of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Development of nanometer-sized magnetic particles exhibiting a large coercive field (Hc) is in high demand for densification of magnetic recording. Herein, we report a single-nanosize (i.e., less than ten nanometers across) hard magnetic ferrite. This magnetic ferrite is composed of ε-Fe2O3, with a sufficiently high Hc value for magnetic recording systems and a remarkably high magnetic anisotropy constant of 7.7 × 106 erg cm−3. For example, 8.2-nm nanoparticles have an Hc value of 5.2 kOe at room temperature. A colloidal solution of these nanoparticles possesses a light orange color due to a wide band gap of 2.9 eV (430 nm), indicating a possibility of transparent magnetic pigments. Additionally, we have observed magnetization-induced second harmonic generation (MSHG). The nonlinear optical-magnetoelectric effect of the present polar magnetic nanocrystal was quite strong. These findings have been demonstrated in a simple iron oxide, which is highly significant from the viewpoints of economic cost and mass production. | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | UTokyo Research掲載「世界最小ハードフェライト磁石の開発に成功」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/the-worlds-smallest-hard-ferrite-magnet.html | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | UTokyo Research "The world's smallest hard ferrite magnet" URI: http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/the-worlds-smallest-hard-ferrite-magnet.html | |||||
| 書誌情報 |
Scientific Reports 巻 5, p. 14414, 発行日 2015-10-06 |
|||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 20452322 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | info:doi/10.1038/srep14414 | |||||
| 権利 | ||||||
| 権利情報 | Copyright © 2015, Rights Managed by Nature Publishing Group | |||||
| 著者版フラグ | ||||||
| 値 | publisher | |||||
| 出版者 | ||||||
| 出版者 | Nature Publishing Group | |||||
| 関係URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/the-worlds-smallest-hard-ferrite-magnet.html | |||||
| 関係URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/the-worlds-smallest-hard-ferrite-magnet.html | |||||
| 関係URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.nature.com/articles/srep14414 | |||||
