Title :
Constant Velocity of Domain Wall Propagation Independent of Applied Field Strength in Vicalloy Wire
Author :
Tanaka, Hiroyuki ; Yamada, Tsutomu ; Takemura, Yasushi ; Abe, Susumu ; Kohno, Shiro ; Nakamura, Hiroshi
Author_Institution :
Dept. of Electr. & Comput. Eng., Yokohama Nat. Univ.
fDate :
6/1/2007 12:00:00 AM
Abstract :
A fast magnetization reversal accompanied by a large Barkhausen jump in Vicalloy wires was studied. An alternating magnetic field having a frequency of less than 1 Hz was applied only to the center region of the wires. Measuring the position dependence of the pickup coil suggests nucleation and propagation of a reverse magnetic domain from the wire center. The velocity of the domain wall propagation was 500 m/s and was independent of the excitation field strength
Keywords :
Barkhausen effect; cobalt alloys; iron alloys; magnetic domain walls; magnetisation reversal; nucleation; vanadium alloys; Barkhausen jump; FeCOV; domain wall propagation; excitation field strength; magnetization reversal; nucleation; pickup coil; reverse magnetic domain propagation; vicalloy wires; Coils; Magnetic anisotropy; Magnetic cores; Magnetic domain walls; Magnetic domains; Magnetic fields; Magnetization reversal; Perpendicular magnetic anisotropy; Voltage; Wire; Domain wall propagation; large Barkhausen jump; magnetization reversal; vicalloy wire;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2007.893481
