What are Superparamagnetic Iron Oxide Nanoparticles (SPIONs)?
Superparamagnetic Iron Oxide Nanoparticles (SPIONs) are a class of nanoparticles that exhibit superparamagnetic properties, which means they can be magnetized in the presence of an external magnetic field and demagnetized when the field is removed. These nanoparticles typically range from 1 to 100 nanometers in size and consist primarily of iron oxide compounds such as magnetite (Fe3O4) and maghemite (γ-Fe2O3).