Abstract–The effect of heat treatment (HT) on the structural features, magnetic properties, and magnetic impedance of rapidly quenched Fe_73.5Si_13.5B₉Nb₃Cu₁ ribbons and doped ribbons, in which 10 wt % iron is replaced by either cobalt, nickel, or manganese, is studied in this paper. Cobalt ribbons as a result of HT at a constant temperature showed a significant increase in the value of maximum magnetic induction. The magnetic and magnetic-impedance properties, studied in a wide range of alternating current frequencies from 1 to 400 MHz, showed a significant change in the features of effective magnetic anisotropy and high-frequency responses after HT. A comparative analysis of the results obtained for samples of various compositions can be useful both for understanding the features of the formation of effective magnetic anisotropy in nanocrystalline alloys and from the point of view of practical applications in the search for optimal physicochemical parameters of materials for sensors of low magnetic fields.

摘要–热处理对快速淬火的Fe _73.5 Si _13.5 B ₉ Nb ₃ Cu ₁的结构特征，磁性能和磁阻抗的影响本文研究了碳带和掺杂碳带，其中10 wt％的铁被钴，镍或锰替代。HT在恒定温度下产生的钴带显示出最大磁感应值的显着增加。在从1到400 MHz的宽交流频率范围内研究的磁和磁阻抗特性，表明HT后有效磁各向异性和高频响应的特性发生了显着变化。