Neodymium magnets are a type of rare earth magnet. They are the strongest rare earth magnets and can be very dangerous if handled improperly. They are often referred to as rare earth magnets and are the strongest permanent magnets available today. Neodymium magnets are also known as Neodymium-Iron-Boron or Nd-Fe-B or NIB super magnets since they are composed of these elements. These magnets are extremely strong for their small size and are metallic in appearance. Neodymium Magnets are the strongest of the rare-earth magnets.neodymium magnets can be used in industry and numerous fun and educational projects.