Using the melt-spinning technique, ribbons made of amorphous Fe_68+xCr_12-xSi₈B₁₂ with varying compositions of x (0, 4, and 10) were fabricated. The transition temperature can be tuned from 360 (for x = 0) to 610 K (for x = 10) with decreasing Cr content. Around the Curie temperature, there is a magnetic transition known as second-order paramagnetic to ferromagnetic (PM-FM) magnetic transition (SOMT) that the ribbons experience. Our exploration of magnetic interaction involves analyzing critical behavior through various methods including the modified Arrott plot (MAP), Kouvel-Fisher method (K–F), and critical isotherm analysis (CIA). Upon determining critical exponents values (β, γ, and δ), we found them to be in proximity to those anticipated for the short-range 3D-Heisenberg model. Furthermore, an independent analysis of critical behavior was performed using the magnetocaloric effect (MCE) to confirm these findings.

使用熔纺技术，制造了由具有不同x（0、4和10）组成的非晶态Fe _68+x Cr _12-x Si ₈ B _{12制成的带材。} 随着 Cr 含量的降低，转变温度可以从 360 K（x  = 0）调整到 610 K（x = 10）。在居里温度附近，带材会经历称为二阶顺磁到铁磁 ( PM-FM ) 磁转变 ( SOMT ) 的磁转变。我们对磁相互作用的探索涉及通过各种方法分析关键行为，包括修改的阿罗特图 ( MAP )、Kouvel-Fisher 方法 ( K–F ) 和临界等温线分析 ( CIA )。在确定临界指数值（β、γ 和 δ）后，我们发现它们接近短程3D 海森堡模型的预期值。此外，利用磁热效应（ MCE ）对关键行为进行了独立分析，以证实这些发现。