Creation of Spin-Nanostructure with Extreme High Magnetic Moment

具有极高磁矩的自旋纳米结构的创建

• 批准号: 21226007
• 负责人: TAKAHASHI Migaku
• 金额: $ 130.96万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (S)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009-05-11 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21226007/
• 关键词: 電気・電子材料; 窒化鉄; 飽和磁化; ナノ粒子; 薄膜

In order to obtain a new magnetic material with high saturation magnetization, establishment of synthesis method of alpha"-Fe16N2 nanoparticles and fabrication method of Fe-based nanoparticle assembly. By synthesizing new precursors and optimizing process conditions, single-phase of alpha"-Fe16N2 nanoparticles was successfully synthesized for the first time, whose saturation magnetization was 234emu/g. By applying Fe nanoparticles with 10nm in diameter, newly developed coagulation method of nanoparticles could control a volume fraction from 0.5% to 40% of the Fe nanoparticle assembly.

为了获得具有高饱和磁化强度的新型磁性材料，建立了α”-Fe_（16）N_2纳米粒子的合成方法和Fe基纳米粒子组装体的制备方法。通过合成新的前驱体和优化工艺条件，首次成功合成了单相α”-Fe_（16）N_2纳米粒子，其饱和磁化强度为234 emu/g。通过使用直径为10 nm的Fe纳米颗粒，新开发的纳米颗粒凝聚方法可以控制Fe纳米颗粒组装体的体积分数为0.5%至40%。

项目成果

Effect of directionally oriented magnetic dipole field on static and dynamic magnetic properties of Fe nanoparticle needle-shaped assembly

定向磁偶极场对Fe纳米粒子针状组装体静动态磁性能的影响

• 发表时间: 2012
• 作者: 山本剛;白須圭一;野坂陽;Weili Wang;橋田俊之;H. Kura
• 通讯作者: H. Kura

Fe_<16>N_2 Interstitial Compound-New Candidate for Permanent Magnetic Material with Rare Earth Element Free-

Fe_<16>N_2间隙化合物-不含稀土元素的永磁材料新候选-

• 发表时间: 2011
• 作者: T. Sudayama;Y. Takahashi;J. Okamoto;Y. Yamasaki;H. Nakao;Y. Murakami;S. Asai;N. Furuta;R. Okazaki;Y. Yasui;I. Terasaki;M.Takahashi
• 通讯作者: M.Takahashi

Synthesis and magnetic characterization of α”-Fe16N2 Interstitial Compound- New Candidate for Permanent Magnetic Material with Rare Earth Element Free

无稀土永磁材料新候选α”-Fe16N2间隙化合物的合成及磁学表征

• 发表时间: 2013
• 作者: M.Yoshida;F.Suzuki;T.Morisaki;M.Nakazawa;縄田浩志;S. Ueda;Y.Iwasa;M. Takahashi
• 通讯作者: M. Takahashi

Size effect of Fe nanoparticles on the high frequency dynamics for highly dense self-organized assemblies

Fe 纳米粒子对高密度自组织组件高频动力学的尺寸效应

• DOI: 10.1063/1.3676224
• 发表时间: 2012
• 期刊: Journal of Applied Physics
• 影响因子: 3.2
• 作者: H. Kura;T. Ogawa;R. Tate;K. Hata and M. Takahashi
• 通讯作者: K. Hata and M. Takahashi

Spin-glasslike behavior of magnetic ordered state originating from strong interparticle magnetostatic interaction in α-Fe nanoparticle agglomerate

• DOI: 10.1063/1.3602313
• 发表时间: 2011-06-20
• 期刊: APPLIED PHYSICS LETTERS
• 影响因子: 4
• 作者: Hiroi, Kosuke;Kura, Hiroaki;Sato, Tetsuya
• 通讯作者: Sato, Tetsuya