Neodymium magnets are attracted to ferromagnetic materials, which are materials that are capable of being magnetized and are attracted to magnets.
Ferromagnetic materials include iron, steel, nickel, cobalt, and some alloys of these materials. Neodymium magnets will also attract other rare earth magnets, such as samarium-cobalt magnets and cerium-iron-cobalt magnets.
Neodymium magnets will not attract non-ferromagnetic materials, such as copper, aluminum, gold, and silver.
It is worth noting that the strength of the attraction between a neodymium magnet and a ferromagnetic material will depend on the specific properties of the magnet and the material, as well as the distance between them. The strength of the magnetic field decreases exponentially with distance, so the attraction between the magnet and the ferromagnetic material will be stronger at closer distances.