Title :
Detection of the Magnetocrystalline Anisotropy in X-Ray Magnetic Linear Dichroism Reflection Spectra Across the Fe 3p and 2p Edges
Author :
Mertins, Hans-Christoph ; Legut, Dominik ; Tesch, Marc ; Jansing, Christine ; Gilbert, Markus ; Gaupp, Andreas ; Oppeneer, Peter M. ; Burgler, Daniel E. ; Schneider, Claus M. ; Berges, Ulf
Author_Institution :
Munster Univ. of Appl. Sci., Steinfurt, Germany
Abstract :
The magnetocrystalline anisotropy of X-ray magnetic linear dichroism (XMLD) reflection spectra measured on single-crystalline bcc Fe films across the 3p and 2p edges are presented. The XMLD spectra were obtained from a series of reflection spectra by aligning the electric field vector of linearly polarized undulator radiation with respect to the crystal axes. Our results show the presence of a huge magnetocrystalline anisotropy in the XMLD reflection spectra. The XMLD signal is further investigated as a function of the Fe film thickness in Au/Fe/Ag/GaAs layered systems. Simulations of the reflection spectra reveal the influences of interference effects, which can enhance or diminish the XMLD signals. The measured spectra are in good agreement with ab initio calculated spectra.
Keywords :
III-V semiconductors; X-ray spectra; ab initio calculations; gallium compounds; gold; iron; magnetic anisotropy; magnetic circular dichroism; magnetic multilayers; magnetic thin films; silver; 2p edges; 3p edges; Au-Fe-Ag-GaAs; X-ray magnetic linear dichroism reflection spectra; XMLD spectra; ab initio calculated spectra; electric field vector; interface magnetism; interference effects; iron film thickness function; linearly polarized undulator radiation; magnetocrystalline anisotropy; multilayered system; single crystalline bcc iron films; Anisotropic magnetoresistance; Interference; Iron; Magnetic cores; Magnetic resonance; Perpendicular magnetic anisotropy; Ab initio theory; X-ray magnetic linear dichroism (XMLD); magnetooptics; synchrotron radiation;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2014.2321632
