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Neodymium Iron Boron (NdFeB) is another type of rare earth magnetic material.
This material has similar properties as the Samarium Cobalt except
that it is more easily oxidized and generally doesn't have the same temperature resistance.
NdFeB magnets also have the highest energy products approaching 50MGOe.
These materials are costly and are generally used in very selective applications due to the cost.
Cost is also driven by existing intellectual property rights of the developers of this type of magnet.
Their high energy products lend themselves to compact designs that result in innovative applications and lower manufacturing costs.
NdFeB magnets are highly corrosive. Surface treatments have been developed that allow them to be used in most applications.
These treatments include gold, nickel, zinc and tin plating and epoxy resin coating
