When the size of the nano-ferric oxide particles is reduced to the nanometer order, due to the small size effect, surface effect, quantum size effect and macroscopic quantum tunneling effect of the nanoparticles, it has a special difference from the conventional bulk materials. Magnetic properties. This also makes it have special applications in the fields of industry, biomedicine and so on. 1.Magnetic recording material One of the most important uses of Fe3O4 magnetic particles is to make magnetic recording materials. Due to its small size, the Fe3O4 iron oxide nanoparticles have a magnetic structure from multi-domain to single-domain, and have a very high coercive force. The magnetic recording material can greatly improve the signal-to-noise ratio and improve the image quality. It is also possible to achieve a high density of information records. Nano-sized triiron tetroxide particles must have high coercivity and magnetization, small size, corrosion resistance, friction resist...
chemic raw material wholesale and supplier