Chemical Composition Tuning of the Anomalous Hall Effect in   Isoelectronic L10 FePd1-xPtx Alloy Films
  The anomalous Hall effect (AHE) in L10 FePd1-xPtx alloy films is studied both experimentally and theoretically. We find that the intrinsic contribution (?sigma^int_AH) to the AHE can be significantly increased whereas the extrinsic side-jump contribution (sigma^?sj_AH) can be continuously reduced from being slightly larger than sigma^?int_AH in L10 FePd to being much smaller than sigma^?int_AH in L10 FePt, by increasing the Pt composition x. We show that this chemical composition tuning of the intrinsic contribution is afforded by the stronger spin-orbit coupling strength on the Pd/Pt site when the lighter Pd atoms are replaced by the heavier Pt atoms. Our results provide a means of manipulating the competing AHE mechanisms in ferromagnetic alloys for fuller understanding the AHE and also for technological applications of ferromagnetic alloys. 
P. He, L. Ma, Z. Shi, G. Y. Guo, J.-G. Zheng, Y. Xin and S. M. Zhou
cond-mat.mtrl-sci