Torsion dependence of the magnetization process in magnetostrictive amorphous wire

Abstract

The torsion dependence of axial and inverse Wiedemann-effect hysteresis loops for a highly magnetostrictive wire has been experimentally determined for the as-quenched state and after thermal treatment. Particular emphasis has been given to the study of the evolution of the remanence and switching field for bistable behavior with applied torsional strain. The switching process for both kinds of loops is discussed. From the analysis of the results the existence of a small component of the magnetization along a helical direction for the as-quenched state may be concluded.