Neodymium-Iron-Boron Magnets (NdFeB Magnets), also known as neodymium magnets, are tetragonal crystal structures formed by neodymium, iron, and boron (chemical formula Nd₂Fe₁₄B). They are a type of high energy density permanent magnetic material that can efficiently achieve energy and information conversion without consuming energy themselves. NdFeB magnets, with their extremely high energy density, have promoted the development of science and technology as well as the information industry towards integration, miniaturization, ultra-miniaturization, lightweight, and intelligence. Neodymium-Iron-Boron magnets are one of the most commonly used rare earth permanent magnetic materials today.