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Theory of Nucleation Fields in Inhomogeneous Ferromagnets
Author(s) -
Kronmüller H.
Publication year - 1987
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.2221440134
Subject(s) - nucleation , condensed matter physics , magnetocrystalline anisotropy , ferromagnetism , planar , anisotropy , magnetic field , materials science , micromagnetics , physics , magnetic anisotropy , magnetization , thermodynamics , quantum mechanics , computer graphics (images) , computer science
The effect of the microstructure on the coercive field of sintermagnets is investigated on the basis of the theory of micromagnetism. From the linearized micromagnetic equations nucleation fields are determinded for magnetic inhomogeneities with quasi‐harmonic spatial variations of the magnetocrystalline anisotropy energy. For one‐ and two‐dimensional nucleation modes the eigenvalues of the nucleation fields are derived as a function of the width and the strength of planar magnetic inhomogeneities.