Layer resolved magnetization dynamics in coupled magnetic films using time-resolved x-ray magnetic circular dichroism with continuous wave excitation

被引：19

作者：

Martin, T. ^{[1
]}

Woltersdorf, G. ^{[1
]}

Stamm, C. ^{[2
]}

Duerr, H. A. ^{[2
]}

Mattheis, R. ^{[3
]}

Back, C. H. ^{[1
]}

Bayreuther, G. ^{[1
]}

机构：

[1] Univ Regensburg, Inst Expt & Angew Phys, D-93040 Regensburg, Germany

[2] Berliner Elektronenspeicherring Gesell Synchrotro, D-12489 Berlin, Germany

[3] Inst Photon Technol eV, D-07745 Jena, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 07期

关键词：

Spectroscopy; -; Dichroism;

D O I：

10.1063/1.3068650

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Time-resolved x-ray magnetic circular dichroism was used to investigate ferromagnetically coupled CoFe/Ru/NiFe bilayers. The magnetization dynamics was driven by a continuous wave excitation. The precessional motion of the individual layers was detected separately by tuning the x-ray photon energy to the L-3 absorption edge of either Ni or Co. Using two different waveguide stack geometries in-phase and antiphase excitation could be selected showing its effect in the measured precessional signal of the individual layers. In exchange-coupled bilayer two precessional modes were observed for each layer. The relative phase angles of the magnetic response between the two layers were found to be 8 and 133, for the two modes revealed their quasiacoustic and quasioptic character. (c) 2009 American Institute of Physics. [DOI: 10.1063/1.3068650]

引用

页数：3

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