Quantitative analysis of magnetic spin and orbital moments from an oxidized iron (1 1 0) surface using electron magnetic circular dichroism

Thersleff, Thomas; Rusz, Jan; Rubino, Stefano; Hjörvarsson, Björgvin; Ito, Yasuo; J. Zaluzec, Nestor; Leifer, Klaus

doi:10.1038/srep13012

Title: Quantitative analysis of magnetic spin and orbital moments from an oxidized iron (1 1 0) surface using electron magnetic circular dichroism

Journal Article · Mon Aug 17 00:00:00 EDT 2015 · Scientific Reports

DOI:https://doi.org/10.1038/srep13012· OSTI ID:1214704

Thersleff, Thomas ^[1]; Rusz, Jan ^[2]; Rubino, Stefano ^[3]; Hjörvarsson, Björgvin ^[2]; Ito, Yasuo ^[4]; J. Zaluzec, Nestor ^[5]; Leifer, Klaus ^[2]

Uppsala University, Uppsala (Sweden). Dept. of Engineering Sciences
Uppsala University, Uppsala (Sweden). Dept. of Physics and Astronomy
Uppsala University, Uppsala (Sweden). Dept. of Engineering Sciences; Univ. of Oslo (Norway). Dept. of Physics
Northern Illinois Univ., DeKalb, IL (United States). Dept. of Physics
Argonne National Lab. (ANL), Argonne, IL (United States)

Understanding the ramifications of reduced crystalline symmetry on magnetic behavior is a critical step in improving our understanding of nanoscale and interfacial magnetism. However, investigations of such effects are often controversial largely due to the challenges inherent in directly correlating nanoscale stoichiometry and structure to magnetic behavior. Here, we describe how to use Transmission Electron Microscope (TEM) to obtain Electron Magnetic Circular Dichroism (EMCD) signals as a function of scattering angle to locally probe the magnetic behavior of thin oxide layers grown on an Fe (1 1 0) surface. Experiments and simulations both reveal a strong dependence of the magnetic orbital to spin ratio on its scattering vector in reciprocal space. We exploit this variation to extract the magnetic properties of the oxide cladding layer, showing that it locally may exhibit an enhanced orbital to spin moment ratio. This finding is supported here by both spatially and angularly resolved EMCD measurements, opening up the way for compelling investigations into how magnetic properties are affected by nanoscale features.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1214704

Journal Information:: Scientific Reports, Vol. 5; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 23 works

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