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Title: Longitudinal detection of ferromagnetic resonance using x-ray transmission measurements

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{sub 73}Fe{sub 18}Gd{sub 7}Co{sub 2}) at the L{sub 3}/L{sub 2}-edges of Fe, Co, and Ni. The achieved ferromagnetic resonance sensitivity is about 0.1 monolayers/{radical}(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.

Authors:
;  [1]; ;  [2]; ;  [3];  [4];  [5];  [2]
  1. Ecole Polytechninque Federale de Lausanne (EPFL), CH-1015 Lausanne (Switzerland)
  2. Centre d'Investigacio en Nanociencia i Nanotecnologia (ICN-CSIC), E-08193 Bellaterra, Barcelona (Spain)
  3. Swiss Light Source (SLS), Paul Scherrer Institut, CH-5232 Villigen (Switzerland)
  4. European Synchrotron Radiation Facility (ESRF), F-38043 Grenoble (France)
  5. Seagate Technology, 47010 Kato Road, Fremont, California 94538 (United States)
Publication Date:
OSTI Identifier:
22051122
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 80; Journal Issue: 12; Other Information: (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COBALT ALLOYS; DOPED MATERIALS; FERROMAGNETIC MATERIALS; FERROMAGNETIC RESONANCE; GADOLINIUM ALLOYS; MAGNETIC FIELDS; MICROWAVE RADIATION; PERMALLOY; SENSITIVITY; SOFT X RADIATION; THIN FILMS; X-RAY DETECTION

Citation Formats

Boero, G, Rusponi, S, Kavich, J, Rizzini, A Lodi, Piamonteze, C, Nolting, F, Tieg, C, Thiele, J -U, Gambardella, P, and Institucio Catalana de Recerca i Estudis Avancats. Longitudinal detection of ferromagnetic resonance using x-ray transmission measurements. United States: N. p., 2009. Web. doi:10.1063/1.3267192.
Boero, G, Rusponi, S, Kavich, J, Rizzini, A Lodi, Piamonteze, C, Nolting, F, Tieg, C, Thiele, J -U, Gambardella, P, & Institucio Catalana de Recerca i Estudis Avancats. Longitudinal detection of ferromagnetic resonance using x-ray transmission measurements. United States. https://doi.org/10.1063/1.3267192
Boero, G, Rusponi, S, Kavich, J, Rizzini, A Lodi, Piamonteze, C, Nolting, F, Tieg, C, Thiele, J -U, Gambardella, P, and Institucio Catalana de Recerca i Estudis Avancats. 2009. "Longitudinal detection of ferromagnetic resonance using x-ray transmission measurements". United States. https://doi.org/10.1063/1.3267192.
@article{osti_22051122,
title = {Longitudinal detection of ferromagnetic resonance using x-ray transmission measurements},
author = {Boero, G and Rusponi, S and Kavich, J and Rizzini, A Lodi and Piamonteze, C and Nolting, F and Tieg, C and Thiele, J -U and Gambardella, P and Institucio Catalana de Recerca i Estudis Avancats},
abstractNote = {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{sub 73}Fe{sub 18}Gd{sub 7}Co{sub 2}) at the L{sub 3}/L{sub 2}-edges of Fe, Co, and Ni. The achieved ferromagnetic resonance sensitivity is about 0.1 monolayers/{radical}(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.},
doi = {10.1063/1.3267192},
url = {https://www.osti.gov/biblio/22051122}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 12,
volume = 80,
place = {United States},
year = {Tue Dec 15 00:00:00 EST 2009},
month = {Tue Dec 15 00:00:00 EST 2009}
}