The strongest magnets available nowadays are the neodymium magnets, made of a combination of neodymium, iron, and boron (abbreviated: NdFeB). They are called rare earth because their composition elements are found in the "Rare Earth" or Lanthanides portion of the Periodic Table of Elements.
 

First developed in the 1980's, neodymium magnets are characterised by exceptionally strong magnetic properties by even better resistance to demagnetisation, unlike most other types of magnets. NdFeB magnets are extremely powerful by volume and will retain magnet properties for decades (they are considered permanent magnets, even if they are not literally permanent).

This set of magnetic options provides the greatest accessible magnetic energies of any material. NdFeB magnet call up for pretty huge magnetising fields. They are are mechanically week, but magnetically pretty strong. Two magnets can snap collectively with enough force to chip or shatter on impact.

Sintered NdFeB magnets are hard and brittle. to safeguard the magnet from corrosion and also to strengthen the brittle magnet material, it is extremely recommended to the magnet to acquire coated.

NdFeB magnets allow small shapes and sizes and have various utilizes in science, engineering and industry. a broad variety of types of sintered NdFeB magnets in particular shapes and sizes for example blocks, cubes, cylinders, discs, spheres, rods, rings may possibly be ordered.

There presently aren't any regarded harmful well being outcomes from managing NdFeB magnets.