SBIR Phase I: High Performance Nano-Fe/SiO2 Soft Magnetic Cores Based on Exchange Coupling

这个小企业创新研究（SBIR）第一阶段项目旨在展示利用纳米颗粒之间的交换耦合概念，开发新型纳米复合材料在高频应用中显著提高磁性能的可行性。到目前为止，交换耦合的概念还没有在高频磁性纳米复合材料中实现。与传统铁氧体相比，改进的性能将包括更高的磁导率、更高的电阻率和更低的铁芯损耗。在这个项目中，将使用湿化学技术制造具有不同铁体积分数的陶瓷涂层铁纳米颗粒。最终产品的性能将被测试并与传统铁氧体进行比较。这一创新有望对电气和电子工业产生重大影响，使制造低成本的形状磁性结构成为可能。

This Small Business Innovation Research (SBIR) Phase I project is designed to demonstrate the feasibility of exploiting novel nanocomposite materials for significantly improved magnetic performance in high frequency applications, using the exchange coupling concept between nanoparticles. To date, the exchange-coupling concept has not been realized in bulk form magnetic nanocomposites in high frequency magnetic applications. The improved properties will include a combination of higher permeability, higher electrical resistivity, and lower core loss than those for the conventional ferrites. In this project, ceramic coated Fe nanoparticles with various Fe volume fractions will be manufactured using a wet-chemical technique. The performance of the end product will be tested and compared with conventional ferrites. This innovation is expected to have a major impact on the electrical and electronic industries by enabling the manufacture of low cost shaped magnetic structures.