Effect of Annealing Temperature on Magnetic Aftereffect and Positron Lifetime in Fe73.5Cu1Nb3Si13.5B9 Alloy

The magnetic aftereffect (MAE) and the positron lifetime were measured at room temperature on the Fe73.5Cu1Nb3Si13.5B9 alloy in as-cast and after annealing at temperature Ta in the range from 450 to 750℃. It was found that both the MAE and the positron lifetime decrease with increasing Ta when Ta≤600℃. While Ta≥650℃, MAE is essentially suppressed, and two positron lifetimes appear.