ON THE BIAS FIELD-DEPENDENCE OF FESIB WIRE DELAY-LINES RESPONSE

In this paper are presented results concerning the dependence of the F e77.5Si7.5B15 amorphous magnetostrictive wire delay line response (pul sed output voltage) on the bias magnetic field applied at the exciting or receiving points. Amorphous wires have been tested in the as-cast state and after stress-relief process. The maximum response is obtaine d for about 100-200 and 100-300 A m(-1) bias magnetic field applied in exciting and receiving point respectively. The study has been made in order to determine the biasing optimum conditions for obtaining maxim um sensitivity of magnetostrictive delay line (MDL), as well as to obt ained new magnetic field sensors. (C) 1997 Elsevier Science S.A.