Interface mixing in [Fe/Cr/Al]_x10 multilayer is studied under 120 MeV Ag⁹⁺ swift heavy ions (SHIs) irradiation. The multilayers with different thicknesses were deposited using electron beam evaporation technique. The SHIs induced modifications in structural and magnetic properties were examined with X-ray reflectivity (XRR), magneto-optic Kerr effect (MOKE), and X-ray absorption fine structure (XAFS) to reveal interface diffusivity, including variation in magnetic coercivity, in-plane anisotropy, and local structure. The height of 1^st order Bragg peak of XRR is used to determine the diffusion length as a function of ion fluence, and it is evident that the lower thickness of [Fe/Cr/Al]_x10 multilayer possesses higher interface mixing as compared to samples with higher thickness. MOKE results confirm that both multilayers are soft magnetic in nature and show different behavior of in-plane anisotropy. With the SHIs irradiation, coercivity exhibits opposite trends for different thicknesses of Fe/Cr/Al multilayers due to different interface mixing. Fe K-edge XAFS is used for quantitative analysis of the Fe-Cr and Fe-Al phases as a function of multilayer thickness and ion fluence. The inelastic thermal spike (i-TS) model with size effect is used to explain the observed thickness-dependent intermixing due to the SHIs irradiation. The lattice temperature evaluation calculated by i-TS model shows longer spike duration in thinner film resulting in higher mixing.

[Fe/Cr/Al] _x10多层中的界面混合在120 MeV Ag ⁹⁺快速重离子 (SHIs) 照射下进行了研究。使用电子束蒸发技术沉积具有不同厚度的多层。用 X 射线反射率 (XRR)、磁光克尔效应 (MOKE) 和 X 射线吸收精细结构 (XAFS) 检查 SHI 引起的结构和磁性改变，以揭示界面扩散率，包括矫顽力的变化，面内各向异性和局部结构。1个的高度^ST XRR的顺序布拉格峰用于确定扩散长度作为离子通量的函数，并且显而易见的是，的[Fe / Cr的/铝]的下厚度_X10与具有更高厚度的样品相比，多层具有更高的界面混合。MOKE 结果证实，这两种多层膜本质上都是软磁性的，并表现出不同的面内各向异性行为。在 SHIs 照射下，由于不同的界面混合，不同厚度的 Fe/Cr/Al 多层膜的矫顽力表现出相反的趋势。Fe K-edge XAFS 用于定量分析 Fe-Cr 和 Fe-Al 相作为多层厚度和离子注量的函数。具有尺寸效应的非弹性热尖峰 (i-TS) 模型用于解释由于 SHIs 辐射而观察到的与厚度相关的混合。i-TS 模型计算的晶格温度评估​​表明，较薄的薄膜中较长的尖峰持续时间导致更高的混合。