Magnetomechanical Coupling In the Fe73.5cu1nb3si15.5b7 Metallic-glass After Annealings In Vacuum At 300-degrees-c To 560-degrees-c

The magnetomechanical coupling coefficient (k) of amorphous Fe(73.5)Cu(1)Nb(3)Si1(5.5)B(7) alloy strips was investigated after annealing them in vacuum for 1 h at temperatures ranging from 300 to 560 degrees C. The maximum values of k coefficient (k(m) = 0.62) were observed for annealing at 540 degrees C and k(m) = 0.46 for 560 degrees C when the nanocrystallization process was advanced. For as-quenched samples k(m) was equal to 0.15-0.20