A neodymium magnet (also known as NdFeB, NIB or Neo magnet) is a permanent magnet made from an alloy of neodymium, iron, and boron to form the Nd2Fe14B tetragonal crystalline structure.[1] They are the most widely used type of rare-earth magnet.[2]
Developed independently in 1984 by General Motors and Sumitomo Special Metals,[3][4][5] neodymium magnets are the strongest type of permanent magnet available commercially.[1][6] They have replaced other types of magnets in many applications in modern products that require strong permanent magnets, such as electric motors in cordless tools, hard disk drives and magnetic fasteners.
NdFeB magnets can be classified as sintered or bonded, depending on the manufacturing process used.[7][8]
- ^ a b Fraden, Jacob (2010). Handbook of Modern Sensors: Physics, Designs, and Applications, 4th Ed. USA: Springer Publishing. p. 73. ISBN 978-1-4419-6465-6.
- ^ "What is a Strong Magnet?". The Magnetic Matters Blog. Adams Magnetic Products. October 5, 2012. Archived from the original on March 26, 2016. Retrieved October 12, 2012.
- ^ Lucas, Jacques; Lucas, Pierre; Le Mercier, Thierry; et al. (2014). Rare Earths: Science, Technology, Production and Use. Elsevier. pp. 224–225. ISBN 978-0-444-62744-5.
- ^ M. Sagawa; S. Fujimura; N. Togawa; H. Yamamoto; Y. Matsuura (1984). "New material for permanent magnets on a base of Nd and Fe (invited)". Journal of Applied Physics. 55 (6): 2083. Bibcode:1984JAP....55.2083S. doi:10.1063/1.333572.
- ^ J. J. Croat; J. F. Herbst; R. W. Lee; F. E. Pinkerton (1984). "Pr-Fe and Nd-Fe-based materials: A new class of high-performance permanent magnets (invited)". Journal of Applied Physics. 55 (6): 2078. Bibcode:1984JAP....55.2078C. doi:10.1063/1.333571.
- ^ "What are neodymium magnets?". wiseGEEK website. Conjecture Corporation. 2011. Retrieved October 12, 2012.
- ^ Sintered NdFeB Magnets, What are Sintered NdFeB Magnets?
- ^ Bonded NdFeB Magnets, What are Bonded NdFeB Magnets?