Neodymium
magnet, also known as NdFeB magnet, is a tetragonal crystal formed by
neodymium, iron and boron(Nd2Fe14B).It is the permanent magnet next to the absolute
zero holmium magnet, also the most commonly used rare earth magnet. which are
widely used in electronic products, such as hard drives, mobile phones,
headphones, and battery-powered tools.