Magnetic Domains Structure of DC Joule-Heated Conventional Amorphous Wires
In this paper, we analyzed the influence of dc Joule heating on the axial magnetic domain of a conventional amorphous wire submitted to a "complete" thermal treatment. Starting from the temperature distribution corresponding to a given value of the electrical dc passing through the
sample, we firstly calculated the internal stresses induced during the thermal annealing and then we have determined the radius of the axial magnetic domain for the different values of applied electrical dc. We found that: (a) the total stresses (owing to the successive heating, crystallization,
and cooling) depend strongly on the value of applied electrical dc; (b) the smaller internal stresses (radial, azimuthal, and axial) in the wire are obtained at smaller values of applied dc current; (c) the cylindrical inner core (CIC) enlarges after dc Joule heating; (d) for a specified value
of the wire's radius, the smaller value of the applied electrical dc correspond to the higher axial magnetic domain radius.
Keywords: CONVENTIONAL AMORPHOUS WIRES; DC JOULE HEATING; MAGNETIC DOMAIN STRUCTURE
Document Type: Research Article
Publication date: 01 March 2007
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