Neodymium oxide is widely used in the field of magnetic materials, primarily because it is a key raw material in the production of neodymium iron boron (NdFeB) permanent magnets. NdFeB magnets are known for their exceptionally high magnetic energy product and coercivity, making them the strongest permanent magnets currently known. These magnets generate a large magnetic field strength in a compact volume, which makes them the preferred choice in many devices that require strong magnets and miniaturization, such as headphones, computer hard drives, and mobile phone vibration motors.
For example, using NdFeB permanent magnets in headphones not only improves sound clarity and quality but also reduces the size of the headphones, enhancing comfort during use. In addition, NdFeB magnets possess excellent resistance to demagnetization, ensuring stable magnetic performance over long periods and in various working environments. This is particularly important for applications that require long-term stable magnetic fields, such as drive motors for electric vehicles and wind turbines.