Neodymium iron boron (NdFeb) magnets, also known as rare earth magnet and neo magnets, offer the best value when comparing performance, size and cost. Neodymium iron boron magnets, normally called neo and rare earth magnets, are moderate in price and typically allow for dimensional reductions. Neo magnets or rare earth magnets have poor resistance to corrosion and should have a coating or plating applied. Consideration should be given to the grade of alloy when exposing Neodymium iron boron ( neo and rare earth magnets ) to temperatures above ambient room. Neo ( rare earth and Neodymium iron boron ) magnets have good resistance to external demagnetization fields because of its high Intrinsic Coercive Force (Hci). This resistance makes Neodymium iron boron magnets an excellent choice for electromechanical applications.