What Are the Differences between Nickel Plating and Zinc Plating on Neodymium Magnets? Neodymium magnet, also called NdFeB magnet, is a tetragonal crystal composed of neodymium, iron, and boron (Nd2Fe14B). The magnetic energy product (BHmax) of this kind of magnet is greater than that of a SmCo magnet, and it is also the most commonly used