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Title: Resonant soft x-ray magnetic scattering from the 4f and 3d electrons in DyFe{sub 4}Al{sub 8}: Magnetic interactions in a cycloidal antiferromagnet

Abstract

Soft x-ray resonant scattering has been used to examine the charge and magnetic interactions in the cycloidal antiferromagnetic compound DyFe{sub 4}Al{sub 8}. By tuning to the Dy M{sub 4} and M{sub 5} absorption edges and the Fe L{sub 2} and L{sub 3} absorption edges, we can directly observe the behavior of the Dy 4f and Fe 3d electron shells. Magnetic satellites surrounding the (110) Bragg peak were observed below 65 K. The diffraction peaks display complex spectra at the Dy M{sub 5} edge, indicative of a split 4f electron band. This is in contrast to the simple resonance observed at the Fe L{sub 3} absorption edge, which probes the Fe 3d electron shell. Temperature-dependent measurements detail the ordering of the magnetic moments on both the iron and the dysprosium antiferromagnetic cycloids. The ratio between the superlattice peak intensities of the Dy M{sub 4} and M{sub 5} absorption edges remained constant throughout the temperature range, in contrast to a previous study conducted at the Dy L{sub 2,3} edges. Our results demonstrate the ability of soft x-ray diffraction to separate the individual magnetic components in complicated multielement magnetic structures.

Authors:
;  [1];  [2];  [3];  [4];  [5]
  1. Department of Physics, University of Durham, Rochester Building, South Road, Durham, DH1 3LE (United Kingdom)
  2. Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York, 11973-5000 (United States)
  3. Frederick Seitz Materials Research Laboratory, Department of Physics, University of Illinois, 1110 West Green Street, Urbana, Illinois 61801-3080 (United States)
  4. European Synchrotron Radiation Facility, Boite Postal 220, F-38043 Grenoble Cedex (France)
  5. Departamento de Fisica, University of Coimbra, P-3000 Coimbra (Portugal)
Publication Date:
OSTI Identifier:
20957835
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 75; Journal Issue: 17; Other Information: DOI: 10.1103/PhysRevB.75.174432; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; ALUMINIUM ALLOYS; ANTIFERROMAGNETIC MATERIALS; ANTIFERROMAGNETISM; BRAGG CURVE; DYSPROSIUM; DYSPROSIUM ALLOYS; ELECTRONS; IRON; IRON ALLOYS; MAGNETIC MOMENTS; RESONANCE SCATTERING; SOFT X RADIATION; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE; X-RAY DIFFRACTION

Citation Formats

Beale, T. A. W., Hatton, P. D., Wilkins, S. B., Abbamonte, P., Stanescu, S., and Paixao, J. A.. Resonant soft x-ray magnetic scattering from the 4f and 3d electrons in DyFe{sub 4}Al{sub 8}: Magnetic interactions in a cycloidal antiferromagnet. United States: N. p., 2007. Web. doi:10.1103/PHYSREVB.75.174432.
Beale, T. A. W., Hatton, P. D., Wilkins, S. B., Abbamonte, P., Stanescu, S., & Paixao, J. A.. Resonant soft x-ray magnetic scattering from the 4f and 3d electrons in DyFe{sub 4}Al{sub 8}: Magnetic interactions in a cycloidal antiferromagnet. United States. doi:10.1103/PHYSREVB.75.174432.
Beale, T. A. W., Hatton, P. D., Wilkins, S. B., Abbamonte, P., Stanescu, S., and Paixao, J. A.. Tue . "Resonant soft x-ray magnetic scattering from the 4f and 3d electrons in DyFe{sub 4}Al{sub 8}: Magnetic interactions in a cycloidal antiferromagnet". United States. doi:10.1103/PHYSREVB.75.174432.
@article{osti_20957835,
title = {Resonant soft x-ray magnetic scattering from the 4f and 3d electrons in DyFe{sub 4}Al{sub 8}: Magnetic interactions in a cycloidal antiferromagnet},
author = {Beale, T. A. W. and Hatton, P. D. and Wilkins, S. B. and Abbamonte, P. and Stanescu, S. and Paixao, J. A.},
abstractNote = {Soft x-ray resonant scattering has been used to examine the charge and magnetic interactions in the cycloidal antiferromagnetic compound DyFe{sub 4}Al{sub 8}. By tuning to the Dy M{sub 4} and M{sub 5} absorption edges and the Fe L{sub 2} and L{sub 3} absorption edges, we can directly observe the behavior of the Dy 4f and Fe 3d electron shells. Magnetic satellites surrounding the (110) Bragg peak were observed below 65 K. The diffraction peaks display complex spectra at the Dy M{sub 5} edge, indicative of a split 4f electron band. This is in contrast to the simple resonance observed at the Fe L{sub 3} absorption edge, which probes the Fe 3d electron shell. Temperature-dependent measurements detail the ordering of the magnetic moments on both the iron and the dysprosium antiferromagnetic cycloids. The ratio between the superlattice peak intensities of the Dy M{sub 4} and M{sub 5} absorption edges remained constant throughout the temperature range, in contrast to a previous study conducted at the Dy L{sub 2,3} edges. Our results demonstrate the ability of soft x-ray diffraction to separate the individual magnetic components in complicated multielement magnetic structures.},
doi = {10.1103/PHYSREVB.75.174432},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 17,
volume = 75,
place = {United States},
year = {Tue May 01 00:00:00 EDT 2007},
month = {Tue May 01 00:00:00 EDT 2007}
}