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Boero G, Rusponi S, Kavich J, et al. Longitudinal detection of ferromagnetic resonance using x-ray transmission measurements. Rev Sci Instrum. 2009;80(12):123902doi: 10.1063/1.3267192.
Boero, G., Rusponi, S., Kavich, J., Rizzini, A. L., Piamonteze, C., Nolting, F., Tieg, C., Thiele, J. U., & Gambardella, P. (2009). Longitudinal detection of ferromagnetic resonance using x-ray transmission measurements. The Review of scientific instruments, 80(12), 123902. https://doi.org/10.1063/1.3267192
Boero, G, et al. "Longitudinal detection of ferromagnetic resonance using x-ray transmission measurements." The Review of scientific instruments vol. 80,12 (2009): 123902. doi: https://doi.org/10.1063/1.3267192
Boero G, Rusponi S, Kavich J, Rizzini AL, Piamonteze C, Nolting F, Tieg C, Thiele JU, Gambardella P. Longitudinal detection of ferromagnetic resonance using x-ray transmission measurements. Rev Sci Instrum. 2009 Dec;80(12):123902. doi: 10.1063/1.3267192. PMID: 20059149.
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Rev Sci Instrum. 2009 Dec;80(12):123902. doi: 10.1063/1.3267192.

Longitudinal detection of ferromagnetic resonance using x-ray transmission measurements.

The Review of scientific instruments

G Boero, S Rusponi, J Kavich, A Lodi Rizzini, C Piamonteze, F Nolting, C Tieg, J-U Thiele, P Gambardella

Affiliations

  1. Ecole Polytechninque Federale de Lausanne, CH-1015 Lausanne, Switzerland. [email protected]

PMID: 20059149 DOI: 10.1063/1.3267192

Abstract

We describe a setup for the x-ray detection of ferromagnetic resonance in the longitudinal geometry using element-specific transmission measurements. Thin magnetic film samples are placed in a static magnetic field collinear with the propagation direction of a polarized soft x-ray beam and driven to ferromagnetic resonance by a continuous wave microwave magnetic field perpendicular to it. The transmitted photon flux is measured both as a function of the x-ray photon energy and as a function of the applied static magnetic field. We report experiments performed on a 15 nm film of doped Permalloy (Ni(73)Fe(18)Gd(7)Co(2)) at the L(3)/L(2)-edges of Fe, Co, and Ni. The achieved ferromagnetic resonance sensitivity is about 0.1 monolayers/square root(Hz). The obtained results are interpreted in the framework of a conductivity tensor based formalism. The factors limiting the sensitivity as well as different approaches for the x-ray detection of ferromagnetic resonance are discussed.

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