Developing Fe-based amorphous alloys with high saturation flux density (B_s) have been challenging topics for a long time. Metalloid elements like B, Si, C, and P are key elements for Fe-based amorphous alloys, but the addition of multiple metalloids would significantly complicate the effects of each metalloid on saturation flux density. Herein, Fe_83-85(B, C, Si)₁₄–₁₆P₁ amorphous alloys with high B_s of 1.61–1.71 T and low coercivity (H_c) of 2.2–8.7 A/m were successfully developed. Fe and metalloids were found to have strong interrelated effects on the total magnetic moment and the strength of magnetic exchange interaction, which largely determine the B_s of Fe-based amorphous alloys. It was revealed that for Fe-rich amorphous alloys, the effects of metalloids on B_s are much more significant than that of Fe, and the effects are largely dependent on Fe content. The complementary effects of metalloids on B_s and the Fe-sensitive behavior of these effects, as well as the underlying mechanisms, have been revealed. These results pave a new way to understand the composition-property relationship, and would help design and develop high-performance Fe-based soft magnetic amorphous alloys.

长期以来，开发具有高饱和通量密度（B _s）的铁基非晶合金一直是具有挑战性的主题。诸如B，Si，C和P之类的准金属元素是铁基非晶合金的关键元素，但是添加多种准金属会大大增加每种准金属对饱和磁通密度的影响。此处，Fe _83-85（B，C，Si）₁₄ – ₁₆ P ₁非晶态合金，具有高B _s为1.61–1.71 T和低矫顽力（H _c成功开发出2.2-8.7 A / m的）。Fe和准金属中发现有对总磁矩和磁交换相互作用的强度强相互关联的影响，这在很大程度上决定了乙_小号Fe基非晶质合金。结果表明，对于富铁的非晶态合金，准金属对B _s的影响比对Fe的影响要大得多，并且这种影响很大程度上取决于Fe的含量。类金属对B _s的互补作用并且已经揭示了这些效应对铁的敏感行为以及潜在的机制。这些结果为理解成分-性质关系开辟了一条新途径，并将有助于设计和开发高性能的铁基软磁非晶合金。