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A Self‐Consistent Approach to the Ideal Magnetization in Heterogeneous Ferromagnetics
Author(s) -
Diener G.,
Posselt M.
Publication year - 1985
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.2221290222
Subject(s) - generalization , isotropy , ferromagnetism , statistical physics , simple (philosophy) , magnetization , micromagnetics , ideal (ethics) , field (mathematics) , range (aeronautics) , materials science , mathematics , condensed matter physics , computer science , physics , mathematical analysis , magnetic field , pure mathematics , quantum mechanics , philosophy , epistemology , composite material
A generalization of the CPA‐like effective‐medium theory for heterogeneous media to the case of non‐linear material behaviour is proposed. The method is developed referring to the example of ideal effective magnetization of heterogeneous ferromagnetics. The treatment is based on the phenomenological description of micromagnetism. The heterogeneity is expressed by random material parameters. In comparison with the effective‐medium theory the main idea of the new procedure consists in the introduction of an additional stochastic field simulating the long‐range interaction between different grains of the heterogeneous body. In order to illustrate the method calculations are carried out for a simple ferromagnetic model system consisting of a mixture of two isotropic components.