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

这个小型企业创新研究（SBIR）第一阶段项目旨在证明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以显著改善高频应用中的磁性能的可行性。 到目前为止，交换耦合的概念还没有实现大块形式的磁性纳米复合材料在高频磁应用。 改进的性能将包括比常规铁氧体更高的磁导率、更高的电阻率和更低的磁芯损耗的组合。 在这个项目中，陶瓷涂层铁纳米粒子与各种铁体积分数将使用湿化学技术制造。 最终产品的性能将被测试并与传统铁氧体进行比较。这一创新有望通过实现低成本成形磁性结构的制造而对电气和电子工业产生重大影响。

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.