Creation of Fe-N Nano-Magnet with Giant Magnetic Moment

具有巨磁矩的Fe-N纳米磁体的制备

• 批准号: 20860008
• 负责人: OGATA Yasunobu
• 金额: $ 2.1万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (Start-up)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20860008/
• 关键词: 磁性ナノ粒子; 窒化鉄; 永久磁石

The fabrication process of Fe-N magnetic particles was investigated in both direct and indirect synthesis method for the purpose of realizing Fe-N compound(Fe_<16>N_2) based permanent magnets. In the direct synthesis method, Fe_3N and Fe_4N nano particles whose average particle size is about 10nm were successfully synthesized by the decomposition of Fe(CO)_5 in NH_3 atmosphere. In the indirect method, the condition in which Fe_<16>N_2 phase can be formed was found out in the process that Fe_2O_3 powder is reduced in H_2, and successively exposed in NH_3.

为了实现Fe-N化合物(Fe&lt；16&Gt；N_2)基永磁体的制备，采用直接合成法和间接合成法研究了Fe-N磁性颗粒的制备工艺。在直接合成法中，利用Fe(CO)5在NH3气氛中的分解，成功地合成了平均粒径约为10 nm的Fe3N和Fe4N纳米粒子。在间接法中，找出了Fe_2O_3粉末在H_2中还原，然后在NH_3中连续暴露的过程中形成Fe_&lt；16&Gt；N_2相的条件。