Matteucci and inverse Wiedemann effects in amorphous wires with enhanced circumferential domains

Abstract

Nonmagnetostrictive CoFeSiB alloy wires were cold drawn and annealed to induce the formation of circular magnetic anisotropy. The axial and circular hysteresis loops indicate the existence of induced transverse anisotropy, with the magnitude of the anisotropy field being dependent on the processing conditions, while circular loops are quasibistable for samples produced under stress. Very peculiar hysteresis loops are obtained for the Matteucci and inverse Wiedemann effects corresponding to those samples exhibiting the mentioned circular bistability.