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The low‐temperature dependence of coercivity in NdFeB magnets
Author(s) -
Hu Jifan,
Kou X. C.,
Kronmüller H.
Publication year - 1995
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221880224
Subject(s) - coercivity , neodymium magnet , magnet , nucleation , condensed matter physics , atmospheric temperature range , materials science , micromagnetics , range (aeronautics) , field (mathematics) , spin (aerodynamics) , magnetic field , thermodynamics , magnetization , physics , mathematics , composite material , quantum mechanics , pure mathematics
The influence of the spin reorientation phenomenon on the nucleation field of NdFeB magnets is analyzed based on the theory of micromagnetism. Results indicate that the temperature dependence of coercivity in the whole temperature range can be well described by the equation H c = (2 K 1 / M s ) × α K α ψ – N eff M s when taking into account the effect of the spin reorientation in the low‐temperature range.