Phase-resolved x-ray ferromagnetic resonance measurements in fluorescence yield
Phase-resolved x-ray ferromagnetic resonance measurements in fluorescence yield
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DOI：
10.1063/1.3567143
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发表时间：
2011-04-01
影响因子：
3.2
通讯作者：
Arenholz, E.
中科院分区：
文献类型：
--
作者：
Marcham, M. K.;Keatley, P. S.;Arenholz, E.
相位分辨的X射线铁磁共振（XFMR）已被测量的荧光产率，XFMR的不透明衬底上的不透明样品的应用扩展。通过连续波微波激发，在Co 50 Fe 50（0.7）/Ni 90 Fe 10（5）双层膜中激发磁化动力学，同时在进动周期的不同点处频闪测量X射线磁性圆二色性（XMCD）谱。通过将X射线能量调谐到Ni和Fe的L-3边缘，确定了元素比磁化率的真实的和虚分量对外部施加的静态偏置场的强度的依赖性。来自对Co 50 Fe 50（0.7）/Ni 90 Fe 10（5）/Dy（1）样品的测量的第一结果证实，增加的阻尼是由于添加Dy帽。(C)2011年美国物理学会。[doi：10.1063/1.3567143]
Phase-resolved x-ray ferromagnetic resonance (XFMR) has been measured in fluorescence yield, extending the application of XFMR to opaque samples on opaque substrates. Magnetization dynamics were excited in a Co50Fe50(0.7)/Ni90Fe10(5) bilayer by means of a continuous wave microwave excitation, while x-ray magnetic circular dichroism (XMCD) spectra were measured stroboscopically at different points in the precession cycle. By tuning the x-ray energy to the L-3 edges of Ni and Fe, the dependence of the real and imaginary components of the element specific magnetic susceptibility on the strength of an externally applied static bias field was determined. First results from measurements on a Co50Fe50(0.7)/Ni90Fe10(5)/Dy(1) sample confirm that enhanced damping results from the addition of the Dy cap. (C) 2011 American Institute of Physics. [doi:10.1063/1.3567143]