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Title: Toward broad-band x-ray detected ferromagnetic resonance in longitudinal geometry

Abstract

An ultrahigh-vacuum-compatible setup for broad-band X-ray detected ferromagnetic resonance (XFMR) in longitudinal geometry is introduced which relies on a low-power, continuous-wave excitation of the ferromagnetic sample. A simultaneous detection of the conventional ferromagnetic resonance via measuring the reflected microwave power and the XFMR signal of the X-ray absorption is possible. First experiments on the Fe and Co L{sub 3}-edges of a permalloy film covered with Co nanostripes as well as the Fe and Ni K-edges of a permalloy film are presented and discussed. Two different XFMR signals are found, one of which is independent of the photon energy and therefore does not provide element-selective information. The other much weaker signal is element-selective, and the dynamic magnetic properties could be detected for Fe and Co separately. The dependence of the latter XFMR signal on the photon helicity of the synchrotron light is found to be distinct from the usual x-ray magnetic circular dichroism effect.

Authors:
 [1];  [2]; ; ; ; ; ;  [1]; ;  [1];  [3]
  1. Fakultät für Physik, Universität Duisburg-Essen, Lotharstr. 1, 47057 Duisburg (Germany)
  2. (ESRF), CS 40220, 38043 Grenoble Cedex (France)
  3. (Austria)
Publication Date:
OSTI Identifier:
22412914
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 22; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; COBALT; EXCITATION; FERROMAGNETIC MATERIALS; FERROMAGNETIC RESONANCE; FILMS; HELICITY; IRON; MAGNETIC CIRCULAR DICHROISM; MAGNETIC PROPERTIES; MICROWAVE RADIATION; PERMALLOY; PHOTONS; VISIBLE RADIATION; X RADIATION

Citation Formats

Ollefs, K., European Synchrotron Radiation Facility, Meckenstock, R., Spoddig, D., Römer, F. M., Hassel, Ch., Schöppner, Ch., Farle, M., Ney, V., Ney, A., E-mail: andreas.ney@jku.at, and Institut für Halbleiter-und Festkörperphysik, Johannes Kepler Universität, Altenberger Str. 69, 4040 Linz. Toward broad-band x-ray detected ferromagnetic resonance in longitudinal geometry. United States: N. p., 2015. Web. doi:10.1063/1.4922248.
Ollefs, K., European Synchrotron Radiation Facility, Meckenstock, R., Spoddig, D., Römer, F. M., Hassel, Ch., Schöppner, Ch., Farle, M., Ney, V., Ney, A., E-mail: andreas.ney@jku.at, & Institut für Halbleiter-und Festkörperphysik, Johannes Kepler Universität, Altenberger Str. 69, 4040 Linz. Toward broad-band x-ray detected ferromagnetic resonance in longitudinal geometry. United States. doi:10.1063/1.4922248.
Ollefs, K., European Synchrotron Radiation Facility, Meckenstock, R., Spoddig, D., Römer, F. M., Hassel, Ch., Schöppner, Ch., Farle, M., Ney, V., Ney, A., E-mail: andreas.ney@jku.at, and Institut für Halbleiter-und Festkörperphysik, Johannes Kepler Universität, Altenberger Str. 69, 4040 Linz. Sun . "Toward broad-band x-ray detected ferromagnetic resonance in longitudinal geometry". United States. doi:10.1063/1.4922248.
@article{osti_22412914,
title = {Toward broad-band x-ray detected ferromagnetic resonance in longitudinal geometry},
author = {Ollefs, K. and European Synchrotron Radiation Facility and Meckenstock, R. and Spoddig, D. and Römer, F. M. and Hassel, Ch. and Schöppner, Ch. and Farle, M. and Ney, V. and Ney, A., E-mail: andreas.ney@jku.at and Institut für Halbleiter-und Festkörperphysik, Johannes Kepler Universität, Altenberger Str. 69, 4040 Linz},
abstractNote = {An ultrahigh-vacuum-compatible setup for broad-band X-ray detected ferromagnetic resonance (XFMR) in longitudinal geometry is introduced which relies on a low-power, continuous-wave excitation of the ferromagnetic sample. A simultaneous detection of the conventional ferromagnetic resonance via measuring the reflected microwave power and the XFMR signal of the X-ray absorption is possible. First experiments on the Fe and Co L{sub 3}-edges of a permalloy film covered with Co nanostripes as well as the Fe and Ni K-edges of a permalloy film are presented and discussed. Two different XFMR signals are found, one of which is independent of the photon energy and therefore does not provide element-selective information. The other much weaker signal is element-selective, and the dynamic magnetic properties could be detected for Fe and Co separately. The dependence of the latter XFMR signal on the photon helicity of the synchrotron light is found to be distinct from the usual x-ray magnetic circular dichroism effect.},
doi = {10.1063/1.4922248},
journal = {Journal of Applied Physics},
number = 22,
volume = 117,
place = {United States},
year = {Sun Jun 14 00:00:00 EDT 2015},
month = {Sun Jun 14 00:00:00 EDT 2015}
}