Torsion and magnetic field measurements using inverse Wiedemann effect in glass-covered amorphous wires

摘要

This paper presents results concerning inverse Wiedemann effect (IWE) dependence on the torsion and d.c. magnetic field applied along the length of the Fe_(77.5)Si_(7.5)B_(15) glass-covered amorphous wires tested in the as-cast state both before and after glass removal. In the absence of torsion during measurements, the IWE voltage is zero. Increasing the torsion value up to about 55 rad/m increases the value of the induced voltage until it reaches a maximum. In the 0.02-0.03 mT range there is a linear dependence of the IWE voltage on the d.c. magnetic field. The obtained results suggest the possibility of using Fe_(77.5)Si_(7.5)B_(15) glass-covered amorphous wires as sensing elements for torsion and magnetic field, based on the IWE.