A neodymium magnet is a type of permanent magnet. It is made from an alloy of neodymium, boron and iron (NdFeB). A tetragonal crystalline structure of Nd2Fe14B alloy is formed. There are several factors responsible for the strength of a Neodymium magnet. One of them is a tetragonal crystalline structure. There are two subcategories of neodymium magnets because of their different manufacturing processes. Sintered NdFeB magnets and bonded NdFeB magnets.
What do we need neodymium for?
Neodymium has some of the following applications.
- Used in glass:
Neodymium is used in glass colouring which is used for different purposes. Neodymium is used in Didymium glasses. It is used in safety glasses for glass blowing and blacksmithing.
Neodymium is used in strong lasers. It is also used in commercially used lasers like pointer lasers. Neodymium-doped crystals produce a high-power infrared laser beams.
- Neodymium magnets:
Neodymium is used in magnets. These are strong and permanent magnets, an alloy of iron, neodymium, and boron ( Nd2Fe14B). Neodymium magnets are used in microphones, headphones and computer hard disks etc.
- Samarium–neodymium dating:
Samarium–neodymium dating is used for the determination of the age of rocks and meteorites.
- Cryocoolers (refrigerators):
Neodymium is used in refrigerators which can reach up to cryogenic temperature. Neodymium has a large specific heat capacity at liquid helium temperatures.
How to pronounce neodymium?