| abstract |
Provided are iron nitride fine particles having excellent magnetic properties, and a colloidal solution containing such iron nitride fine particles. The iron nitride fine particles of the present invention have an average primary particle diameter of 100 nm or less, a saturation magnetization at 5K of 160 emu / g or more, and a saturation magnetization at 300K of 100 emu / g or more. In addition, the iron nitride fine particles of the present invention are, for example, heated and evaporated in the decompression vessel 17, and the evaporated iron 21 is attached to the surface of the liquid medium 15a as iron nitride fine particles via the nitrogen plasma 12a. And collecting the resulting deposits. [Selection] Figure 1 |