Magnetic properties of single nanomagnets: EMCD on FePt nanoparticles

Sebastian Schneider; Darius Pohl; Stefan Löffler; Ján Rusz; Deepa Kasinathan; Peter Schattschneider; Ludwig Schultz; Bernd Rellinghaus

doi:10.1016/j.ultramic.2016.09.009

Magnetic properties of single nanomagnets: EMCD on FePt nanoparticles

Materials Science 2017-03-29 v1

Authors: Sebastian Schneider , Darius Pohl , Stefan Löffler , Ján Rusz , Deepa Kasinathan , Peter Schattschneider , Ludwig Schultz , Bernd Rellinghaus

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Abstract

Energy-loss magnetic chiral dichroism (EMCD) allows for the quantification of magnetic properties of materials at the nanometer scale. It is shown that with the support of simulations that help to identify the optimal conditions for a successful experiment and upon implementing measurement routines that effectively reduce the noise floor, EMCD measurements can be pushed towards quantitative magnetic measurements even on individual nanoparticles. With this approach, the ratio of orbital to spin magnetic moments for the Fe atoms in a single L $1_0$ ordered FePt nanoparticle is determined to be ${m_l}/{m_s} = 0.08 \pm 0.02$ . This finding is in good quantitative agreement with the results of XMCD ensemble measurements.

Keywords

EMCD FePt nanoparticles magnetic properties orbital-to-spin moment ratio single nanomagnet quantitative magnetic measurement

Cite

@article{arxiv.1605.03545,
  title  = {Magnetic properties of single nanomagnets: EMCD on FePt nanoparticles},
  author = {Sebastian Schneider and Darius Pohl and Stefan Löffler and Ján Rusz and Deepa Kasinathan and Peter Schattschneider and Ludwig Schultz and Bernd Rellinghaus},
  journal= {arXiv preprint arXiv:1605.03545},
  year   = {2017}
}

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35 pages, 10 figures

Magnetic properties of single nanomagnets: EMCD on FePt nanoparticles

Abstract

Keywords

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