Magnetite is a rock mineral and one of the main iron ores, with the chemical formula Fe3O4. It is one of the oxides of iron, and is ferrimagnetic; it is attracted to a magnet and can be magnetized to become a permanent magnet itself. It is the most magnetic of all the naturally-occurring minerals on Earth. .. One use is in water purification: in high gradient magnetic separation,
Our magnetite nanoparticles are colloidal iron oxide Fe3O4 materials that exhibit This material is used in nanotoxicology and magnetic nanotechnology research biosensors, ferrofluids, magnetic separations and MRI contrast agents.