We investigated the spin-anomalous Hall effect (SAHE) in ferromagnetic Fe–Co binary alloys with different compositions. The ferromagnetic resonance (FMR) measurement in Fe 1− x Co x /Ti/Py trilayer structures was performed to detect the SAHE in Fe 1− x Co x . The modulation of FMR linewidth in the Py layer due to the SAHE was observed. The effective spin-anomalous Hall angle changed from a positive value (+0.027 at x = 0.15) to a negative value (−0.012 at x = 0.65) with increasing Co composition. This study provides a deeper understanding of the SAHE.

中文翻译：

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铁磁性钴钴合金中自旋异常霍尔效应的成分依赖性

我们研究了具有不同成分的铁磁Fe-Co二元合金中的自旋异常霍尔效应（SAHE）。进行Fe 1-x Co x / Ti / Py三层结构中的铁磁共振（FMR）测量以检测Fe 1-x Co x中的SAHE。观察到由于SAHE，Py层中FMR线宽的调制。随着Co组成的增加，有效的自旋异常霍尔角从正值（x = 0.15时为+0.027）变为负值（x = 0.65时为-0.012）。这项研究提供了对SAHE的更深入的了解。