溶液法和反胶束法制备Fe-B颗粒的结构和磁性能

Microstructure and Magnetic Property of Fe-B Nanoparticles Prepared by Solution and Reverse Micelle Methods

摘要:

采用溶液法和反胶束法合成Fe-B磁性纳米颗粒。通过XRD、TEM、ICP、VSM等手段，依次对Fe-B纳米颗粒的结构、形貌、成分、磁性能进行表征，并针对两种方法所得结果进行对比分析。采用溶液法制备的Fe-B纳米颗粒为晶体结构，颗粒尺寸在20~70 nm；反胶束法合成的Fe-B磁性纳米颗粒一般为非晶结构，颗粒尺寸细小(约5 nm)。ICP颗粒成分分析结果表明，两种方法制备的Fe-B颗粒中B含量不同，溶液法制备的Fe-B颗粒中B含量约为17.8 at%；而反胶束法制备的Fe-B颗粒，其B含量较高，达34.9 at%。上述结构、颗粒尺寸和B含量的差异，导致了两种方法合成的Fe-B颗粒在磁性能方面的差别

Abstract:

Fe-B nanoparticles were synthesized by using solution and reverse micelle methods. The structures, the B contents and the magnetic properties of the particles have been characterized by XRD, TEM, ICP, VSM, etc. It is found that the difference in magnetic properties of Fe-B nanoparticles fabricated by the two methods is mainly caused by the structure, the B content and the particle size. The Fe-B particles fabricated by solution method are crystalline with a size range of 20~70 nm, and the B content is about 17.8 at%; and the Fe-B particles prepared by reverse micelle method are usually non-crystalline with a size much smaller (about 5 nm), the B content is about 34.9 at%.