Title :
Mechanism of re-entrant flux reversal in Fe-Si-B amorphous wires
Author :
Yamasaki, J. ; Takajo, M. ; Humphrey, F.B.
Author_Institution :
Kyushu Inst. of Technol, Kitakyushu, Japan
fDate :
11/1/1993 12:00:00 AM
Abstract :
The mechanism of re-entrant flux reversal in Fe-Si-B amorphous wires is investigated by domain observation and reverse domain detection focusing on the magnetic properties near the wire ends. It is found that the wire consists of shell and core domains and that the core region has the residual reversing domain due to the demagnetizing field near wire ends in a remanent state. The residual domain is stabilized by forming a flux closure structure through the shell domain. This increases the threshold field for domain growth to a value much larger than the wall coercivity and results in predominantly re-entrant flux reversal
Keywords :
boron alloys; coercive force; ferromagnetic properties of substances; iron alloys; magnetic domain walls; magnetic flux; magnetic hysteresis; magnetic properties of amorphous substances; remanence; silicon alloys; FeSiB amorphous wires; core domains; demagnetizing field; domain growth; flux closure structure; magnetic properties; re-entrant flux reversal mechanism; remanent state; residual reversing domain; reverse domain detection; shell domain; threshold field; wall coercivity; Amorphous magnetic materials; Amorphous materials; Coercive force; Coils; Demagnetization; Magnetic cores; Magnetic domains; Magnetic flux; Magnetostriction; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
