RARE EARTHS IN MAGNETS
Ten Times the Strength, Weight for Weight.
Rare earth elements are a magician's ingredient in the world of magnets!
They’re used to produce super-strong permanent magnets, which are essential in many high-tech applications. Here are a few reasons why they’re so vital:
HIGH MAGNETIC SATURATION
High Magnetic Saturation: Rare earth elements like neodymium (Nd) and samarium (Sm) are key ingredients in creating the strongest permanent magnets available. Neodymium magnets, for instance, have a very high magnetic field strength, making them ideal for compact and powerful applications.THERMAL STABILITY
Samarium-cobalt magnets, another type of rare earth magnet, can maintain their magnetic properties at high temperatures, making them suitable for applications that require both strength and thermal resistance, such as in aerospace and military uses.
HIGH COERCIVITY
Coercivity is the resistance of a magnetic material to becoming demagnetized. Rare earth magnets have high coercivity, making them stable and reliable for long-term use in demanding applications.
COMPACT SIZE
Due to their high energy product, rare earth magnets can be made smaller while still delivering the same or greater magnetic strength as larger magnets made from other materials. This is crucial for miniaturization in modern technology, such as in smartphones and medical devices.UNUSUAL ELECTRON CONFIGURATIONS
Rare earth elements have unique electron configurations, particularly in the 4f orbitals. This leads to strong magnetic moments and high anisotropy, meaning they prefer to align in certain directions and resist demagnetization.
HIGH ANISOTROPY
This property means that the magnetic moments of these elements strongly prefer to align in certain directions. High anisotropy contributes to the high coercivity of rare earth magnets, which makes them resistant to demagnetisation