Amorphous RE-Fe-B-Na colloidal nanoparticles: High temperature solution synthesis and magnetic properties

作者：Jia Li Ping; Yan Bing^*

来源：Materials Research Bulletin, 2015, 64: 93-96.

DOI：10.1016/j.materresbull.2014.12.052

• Amorphous materials
• Magnetic materials
• Chemical synthesis
• Magnetic properties

RE-Fe-B-Na (RE = Nd-Er) colloidal nanoparticles are prepared by high-temperature solution synthesis. These nanoparticles are ultra-small monodisperse, air-stable and amorphous, whose particle size and magnetic property are characterized by transmission electron microscope and superconducting quantum interference device. Taking Nd-Fe-B-Na nanoparticle as an example, it is found that the particle size can be controlled in less than 7 nm. Besides, the magnetic properties of RE-Fe-B-Na colloidal nanoparticles can be compared for different rare earth elements. Based on the bulk ferromagnetic coupling, other possible magnetic coupling mechanism is discussed.

• 出版日期2015-4
• 单位同济大学