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Micromagnetic Theory of Phase Transitions in Inhomogeneous Ferromagnets. I. Basic Equations
Author(s) -
Kronmüller H.,
Fähnle M.
Publication year - 1980
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.2220970216
Subject(s) - condensed matter physics , ferromagnetism , curie temperature , landau theory , transversal (combinatorics) , magnetization , phase transition , magnetostriction , physics , dipole , phase (matter) , quantum mechanics , mathematics , magnetic field , mathematical analysis
Landau's theory of second‐order phase transitions is applied for an investigation of inhomogeneous ferromagnetic materials near the Curie temperature. Using micromagnetic concepts it is shown that fluctuations of the Landau parameters as well as magnetostrictive and dipolar interactions lead to deviations from the so‐called linear Arrott plots. In addition it is found that these latter interactions give rise to transversal components of the spontaneous magnetization.