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

Volume

50

Issue

11

fYear

2014

fDate

Nov. 2014

Firstpage

1

Lastpage

4

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2321632

Filename

6971709