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A Quantitative Study of the Stabilization Field for 180° Walls in Iron Single Crystal Sheets Containing Solute Nitrogen
Author(s) -
Tahara Y.,
Sugeno T.
Publication year - 1973
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.2220600141
Subject(s) - magnetization , domain wall (magnetism) , condensed matter physics , magnetostriction , materials science , field (mathematics) , single domain , domain (mathematical analysis) , magnetic domain , plane (geometry) , magnetic field , single crystal , crystal (programming language) , physics , nuclear magnetic resonance , geometry , mathematics , quantum mechanics , mathematical analysis , computer science , pure mathematics , programming language
Abstract The strength of the stabilization field for 180° walls in [100] (011) iron single crystal sheets is derived theoretically and compared with experimental results. An initial magnetization curve after the stabilization of domain walls has taken place is derived using a model in which the reversible and irreversible magnetization processes are separately taken into account. The theoretical maximum value of the stabilization field is shown to be equal to the magnetic field at which the initial magnetization curve shows a first sudden discontinuous increase in induction. Effects of domain wall orientation and magnetostriction on the strength of the stabilization field are calculated. Calculations show that the 180° walls parallel to the (011) plane can be displaced irreversibly at the weekest magnetic field. These theoretical results are satisfied by experiment. A breakaway motion of domain walls is proposed for the sudden discontinuous increase in induction in the stabilized initial magnetization curves. The flexibility of domain walls contributes to the breakaway motion of domain walls.