A neodymium magnet the most widely used type of rare-earth magnet is a permanent magnet made from an alloy of neodymium, iron and boron. Note: Science store has huge variety of magnets like neodymium, ring, bar, horseshoe, ceramic, handle, samarium–cobalt magnet, alnico, rare earth, electromagnets, ferrite, refrigerator, spherical, u shaped and rectangular magnets in Pakistan.