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The Rǒle of Two‐Level Systems in Amorphous Metallic Alloys. II. Micromagnetic Theory of Magnetic After‐Effects in Amorphous Ferromagnets
Author(s) -
Kronmüller H.
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.2221270213
Subject(s) - condensed matter physics , amorphous solid , ferromagnetism , amorphous metal , annealing (glass) , atom (system on chip) , materials science , relaxation (psychology) , physics , chemistry , metallurgy , crystallography , computer science , psychology , social psychology , embedded system
The magnetic after‐effect in amorphous alloys is attributed to the reorientation of mobile atom pairs in regions of reduced mass density. It is shown that the model of two‐level systems (TLSs) gives an appropriate description of the thermodynamic and micromagnetic properties of the magnetic after‐effects. “Reversible” and “irreversible” relaxation processes are attributed to the annealing of mobile atom pairs and to changes of the energy splitting parameters of the TLSs.