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Annealing and torsion stress effect on magnetic anisotropy and magnetostriction of Vicalloy fine wire

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3 Author(s)
Abe, Susumu ; Dept. of Electr. Eng., Kanagawa Univ., Yokohama, Japan ; Matsushita, A. ; Naoe, Masahiko

A twisted semi-hard magnetic wire of Vicalloy with composition of Fe41Co48V11 revealed remarkable uniaxial magnetic anisotropy along central axis direction of the wire and showed a difference in coercivity between outer shell and inner core of the wire. Also the wire remained the large torsion stress enough to generate the large Barkhausen jump. The magnitude of the jump depends strongly on the magnetic characteristics, such as magnetic anisotropy and magnetostriction constants, which may be varied with change of annealing treatment and torsion stress. In this study, the causes of large Barkhausen jump induced due to the stress remained by dice drawing process was investigated. As a result, it was found that the pulse voltage induced in the wire was in proportion to logarithmic two power of reduction

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Magnetics, IEEE Transactions on  (Volume:33 ,  Issue: 5 )