Remagnetization process in magnetically soft amorphous wire under the influence of magnetic field of alternating current

An AC voltage of double frequency with respect to that of an AC current is detected in a coil wound around a Go-rich amorphous wire when the amplitude of the AC current exceeds several mA. The amplitudes of the even harmonics depend on the value of uniform external magnetic field applied parallel to the wire axis. It is shown theoretically that for large enough amplitude o f the AC current the longitudinal component of the wire's magnetization und ergoes oscillations with double frequency with respect to that of the AC cu rrent. Therefore, the experimentally observed AC voltage arises due to the Faraday effect. (C) 2000 Published by Elsevier Science B.V. All rights rese rved.