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首页> 外文期刊>Journal de Physique, IV: Proceedings of International Conference >Diffuse Interface and Strain Anisotropy in Co/Pd(lll) Multilayers by Polarized EXAFS Study
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Diffuse Interface and Strain Anisotropy in Co/Pd(lll) Multilayers by Polarized EXAFS Study

机译:极化EXAFS研究Co / Pd(III)多层膜中的扩散界面和应变各向异性

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摘要

We examined interface structure of Co/Pd multilayers by quantitative analysis of fluorescence-yield Co K-edge EXAFS. To investigate the local atomic structure surrounding Co absorber and its anisotropy in orthogonal directions, two polarization dependent set-ups were used. By means of first shell analysis including distinct nearest neighbors of Co and Pd atoms, it was found that a considerable amount of Co-Pd alloy-like phase near interfaces of thiit Co layers is formed by atomic scaled diffuseness of growing surface. Moreover, we found Co strain anisotropy depending on Co layer thickness, generally, tensile and compressive strains of in-plane and out-of-plane atoms, respectively. These interface structures might critically affect the tendency of perpendicular magnetization in Co/Pd multilayers.
机译:我们通过对荧光产量的Co K-edge EXAFS进行定量分析来检查Co / Pd多层的界面结构。为了研究围绕Co吸收体的局部原子结构及其在正交方向上的各向异性,使用了两个与偏振有关的设置。通过包括Co和Pd原子的最接近邻居的第一壳分析,发现在Thiit Co层的界面附近有大量的Co-Pd合金状相是由生长表面的原子尺度扩散形成的。此外,我们发现Co应变各向异性取决于Co层的厚度,通常分别取决于平面内和平面外原子的拉伸应变和压缩应变。这些界面结构可能会严重影响Co / Pd多层膜中垂直磁化的趋势。

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