Surface Magnetization Reversal of Wiegand Wire Measured by the Magneto-Optical Kerr Effect

被引:4
作者
Nakamura, Tomoaki [1 ]
Tanaka, Hiroki [1 ]
Horiuchi, Tomofumi [1 ]
Yamada, Tsutomu [1 ]
Takemura, Yasushi [1 ]
机构
[1] Yokohama Natl Univ, Dept Elect & Comp Engn, Yokohama, Kanagawa 2408501, Japan
关键词
Wiegand wire; Wiegand effect; magneto-optical Kerr effect (MOKE); magnetization reversal; large Barkhausen jump; LARGE BARKHAUSEN JUMP; PROPAGATION; FIELD;
D O I
10.3390/ma14185417
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The Wiegand wire is known to exhibit a unique feature of fast magnetization reversal in the magnetically soft region accompanied by a large Barkhausen jump. We clarified a significant difference between the magnetization reversals at the surface and at the entire cross section of a Wiegand wire. We conducted magnetization measurements based on the magneto-optical Kerr effect and applied conventional methods to determine the magnetization curves. The switching field of the magnetization reversal at the surface was greater than that at the initiation of a large Barkhausen jump. Our analysis suggests that the outer surface layer exhibits low coercivity.
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页数:7
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