Phase-resolved x-ray ferromagnetic resonance measurements in fluorescence yield

被引：35
|
作者：
Marcham, M. K. [1 ]
Keatley, P. S. [1 ]
Neudert, A. [2 ]
Hicken, R. J. [1 ]
Cavill, S. A. [3 ]
Shelford, L. R. [3 ]
van der Laan, G. [3 ]
Telling, N. D. [4 ]
Childress, J. R. [5 ]
Katine, J. A. [5 ]
Shafer, P. [6 ]
Arenholz, E. [6 ]
机构：
[1] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England
[2] Forschungszentrum Dresden Rossendorf eV, Inst Ion Beam Phys & Mat Res, D-01313 Dresden, Germany
[3] Diamond Light Source, Didcot OX11 0DE, Oxon, England
[4] Keele Univ, Inst Sci & Technol Med, Guy Hilton Res Ctr, Stoke On Trent ST4 7QB, Staffs, England
[5] Hitachi Global Storage Technol, San Jose, CA 95135 USA
[6] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA
来源：
JOURNAL OF APPLIED PHYSICS | 2011年 / 109卷 / 07期
基金：
英国工程与自然科学研究理事会;
关键词：
PRECESSION;
D O I：
10.1063/1.3567143
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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]
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页数：3
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