Structure and properties of soft magnetic alloy 2HCP subjected to short-term annealing

Amorphous iron-based alloys under certain conditions of thermomagnetic treatment in an elastic stress field (ESF) are characterized by a stable tendency to increase saturation magnetization. When studying the 2HCP alloy with small additions of Nb ($\sim$ 0.8%) and Cu ($\sim$ 0.3%) at room temperature, an increase in saturation magnetization was found due to the effect of elastic loading during cooling. The increase in magnetization was $\sim$ 15% after TUO at 540$^\circ$C for 5 min, and $\sim$ 20% after TUO at 540$^\circ$C for 7 min, respectively. It can be assumed that such a change in fundamental characteristics, namely, the anomalous growth of saturation magnetization, is associated with the state of the amorphous structure in the pre-crystallization stage, and with the appearance of finely dispersed precipitates of the crystalline phase as a result of the decomposition of the amorphous matrix.