标题：X-Ray Absorption Spectra and Self-Bias Ferromagnetic Resonance of FeCoB Films Prepared by Composition Gradient Sputtering
作者：Xue, Qian; Zhang, Lijuan; Li, Junqin; Zhang, Yongcheng; Wang, Cuiling; Li, Qiang; Xu, Jie; Li, Yanqiang; Li, Shandong
作者机构：[Xue, Qian; Zhang, Yongcheng; Wang, Cuiling; Li, Qiang; Xu, Jie; Li, Yanqiang; Li, Shandong] Qingdao Univ, Lab Fiber Mat & Modern Text, Key Lab Photon 更多
会议名称：IEEE International Magnetics Conference (Intermag)
会议日期：MAY 11-15, 2015
来源：IEEE TRANSACTIONS ON MAGNETICS
关键词：Composition gradient sputtering; ferromagnetic resonance; soft magentic; films; X-ray absorption spectra
摘要：Fe0.7Co0.3B films with a thickness of 100 nm were prepared by composition gradient sputtering on (100) single-crystal Si substrates. A considerable increase in uniaxial magnetic anisotropy fields H-K from 180.6 to 295.5 Oe was achieved by the gradient composition-induced stress. Although the saturation magnetization 4 pi M-S slightly decreases from 16.3 to 13.5 kG with the increase in the B concentration, the ferromagnetic frequency f(FMR) increases from 4.82 to 5.62 GHz due to the domination of H-K. The X-ray absorption spectra revealed that the decrease in the 4 pi M-S with B concentration can be attributed to the hybridization between Fe and B atoms.