Large gyromagnetic effect in magnetostrictive amorphous wires

Results on the large gyromagnetic effect (LGE) observed in FeSiB amorphous wires are reported. This effect consists in the appearance of a sample rota tion around its axis, with frequencies from 1 to 60 Wt, when the sample is subjected to an axial alternating held of similar to 10(2) A m(-1) with a f requency of similar to 10(4) Hz. The observed experimental characteristics of the effect: indicate that its appearance is closely related to the forma tion of a magnetic standing wave, associated to the 180 degrees domain wall movement from the axially magnetized inner core of such wires. The magnitu de of the wire's magnetostriction constant plays an essential role as conce rns the macroscopic rotation of the wire. (C) 2000 Elsevier Science S.A. Al l rights reserved.