Dragging of domains by an electric current in Metglas 2826 MBa)

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Abstract
A steady, unidirectional motion of stripe domains, caused by hydromagnetic forces, has been observed in ribbons of Metglas 2826 MB traversed by an electric current at 300 K. A half‐wave rectified 60 Hz current density of peak value jp≂20 A/mm2 is sufficient to induce this ‘‘domain drag’’ motion. A dc current density with smaller superposed 60 Hz sinewave ac current, does it too. Because of the very low coercivity (Hc=7 mOe), these jp values are ∼103 times smaller than those needed for domain drag in Gd–Co films, but comparable to those in Co crystals at 4 K. A reversal of current reverses the sense of wall motion. As predicted by theory, wall motion is in the same direction as the motion of effective charge carriers, shown by the sign of the Hall effect to be holes.