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Rare Earth Magnets: Conservation of Energy and the Environment
Author(s) -
Minowa Takehisa
Publication year - 2008
Publication title -
resource geology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.597
H-Index - 43
eISSN - 1751-3928
pISSN - 1344-1698
DOI - 10.1111/j.1751-3928.2008.00073.x
Subject(s) - magnet , dysprosium , neodymium magnet , materials science , rare earth , economic shortage , energy consumption , coercivity , energy conservation , metallurgy , mechanical engineering , condensed matter physics , chemistry , electrical engineering , physics , engineering , inorganic chemistry , linguistics , philosophy , government (linguistics)
Rare earth sintered magnets (Nd magnet) have been used in many applications such as computer and industrial equipment, automobile manufacturing and many others. They are highly efficient and reduce energy consumption because of their superior magnetic properties. The element dysprosium (Dy) contained in the Nd magnet is important and indispensable. It improves the stability of the Nd magnet by enhancing the coercive force of its magnetic properties at high temperature. Dy is not so abundant. The rapid growth of the Nd magnet may result in Dy shortage. Exploration for new deposits of Dy is desired.