In this work, an attempt has been made to reveal critical factors dominating the crystallization and soft magnetic properties of Fe₈₁Si _x B₁₀P_8-xCu₁ (x = 0, 2, 4, 6 and 8) alloys. Both melt spun and annealed alloys are characterized by differential scanning calorimetry, X-ray diffractometry, Mössbauer spectroscopy, transmission electron microscopy, positron annihilation lifetime spectroscopy and magnetometry. The changes in magnetic interaction between Fe atoms and chemical homogeneity can well explain the variation of magnetic properties of Fe₈₁Si _x B₁₀P_8-xCu₁ amorphous alloys. The density of nucleation sites in the amorphous precursors decreases in the substitution of P by Si. Meanwhile, the precipitated nanograins gradually coarsen, but the inhibiting effect of P on grain growth diminishes causing the increase of the crystallinity. Moreover, various site occupancies of Si are observed in the nanocrystallites and the Si occupancy in bcc Fe decreases the average magnetic moment of nanograins. Without sacrificing amorphous forming ability, we can obtain FeSiBPCu nanocrystalline alloy with excellent soft magnetic properties by optimizing the content of Si and P in the amorphous precursors.

中文翻译：

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Fe81Si x B10P8-xCu1（x = 0〜8）的局部结构，成核位置和结晶行为及其对磁性能的影响。

在这项工作中，试图揭示决定Fe ₈₁ Si _x B ₁₀ P _8-x Cu ₁（x = 0、2、4、6和8）合金的结晶和软磁性能的关键因素。熔纺和退火合金的特征都在于差示扫描量热法，X射线衍射法，穆斯堡尔谱，透射电子显微镜，正电子an没寿命谱和磁力计。Fe原子之间的磁性相互作用和化学均匀性的变化可以很好地解释Fe ₈₁ Si _x B ₁₀ P _8-x Cu ₁的磁性质的变化。非晶态合金。非晶态前驱体中成核位点的密度在被Si取代P时降低。同时，沉淀的纳米颗粒逐渐粗化，但是P对晶粒生长的抑制作用减弱，导致结晶度增加。此外，在纳米晶体中观察到Si的各种位占有，并且bcc Fe中的Si占有降低了纳米晶粒的平均磁矩。在不牺牲非晶形成能力的前提下，通过优化非晶态前驱体中Si和P的含量，可以获得具有优良软磁性能的FeSiBPCu纳米晶合金。