How Do Neodymium Magnets Work

Neodymium magnets invented in the early 1980s by General Motors (GM) and Sumitomo Special Metals. Neodymium magnets (also known as NdFeB; NIB or Neo magnets) are the strongest type of permanent magnets commercially available. These neodymium magnets are very strong; cheap; and small. Neodymium magnets made numerous advances in electric motors; audio systems and data storing.

These super strong magnets are made of an alloy (NIB—neodymium); boron and iron. The arrangement of electron in these materials lets them develop strong magnetic fields. The magnetic field is very strong; so we need small amounts of rare earth elements to make a small power full magnet.

The chemical composition of neodymium magnets is Nd₂Fe₁₄B. This crystal structure has exceptionally high uniaxial magneto crystalline anisotropy. This anisotropy gives the compound the potential to have high coercivity. The crystal also has a high saturation magnetization and typically 1.3teslas. Therefore the maximum energy density is proportional to Js2. This neodymium magnetic phase has the potential for storing large amounts of magnetic energy. The magnetic properties of these power full magnets depend on the microstructure; alloy composition; and manufacturing technique which are used by the manufacture.

The neodymium magnets are mainly used in audio systems and electric motors; Magnetic resonance imaging (MRI); loudspeakers and headphones; bench top NMR spectrometers; mechanical e-cigarette firing switches; magnetic bearings and couplings; head actuators for computer hard disks; magnetic guitar pickups; servomotors; spindle and stepper motors; cordless tools; drive motors for hybrid and electric vehicles; electric generators for wind turbines; lifting and compressor motors; synchronous motors; electrical power steering; magnetic jewelry clasps;  sport parachute equipment; Linx anti-reflux system; and children's magnetic building sets.

 About Stanford Magnets. http://www.stanfordmagnets.com/

Based in California, Stanford Magnets has been involved in the R&D and sales of licensed Rare-earth permanent magnets, Neodymium magnets and SmCo magnets, ceramic magnets, flexible magnets and magnetic assemblies since the mid of 1980s. We supply all these types of magnets in a wide range of shapes, sizes and grades.