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Title: Resonant Soft X-ray Magnetic Scattering from the 4f and 3d Electrons in DyFe4Al8: Magnetic Interactions in a Cycloidal Antiferromagnet

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
930531
Report Number(s):
BNL-80562-2008-JA
DOE Contract Number:
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review B: Condensed Matter and Materials Physics; Journal Volume: 75
Country of Publication:
United States
Language:
English
Subject:
national synchrotron light source

Citation Formats

Beale,T., Wilkins, S., Hatton, P., Abbamonte, P., Stanescu, S., and Paixao, J. Resonant Soft X-ray Magnetic Scattering from the 4f and 3d Electrons in DyFe4Al8: Magnetic Interactions in a Cycloidal Antiferromagnet. United States: N. p., 2007. Web. doi:10.1103/PhysRevB.75.174432.
Beale,T., Wilkins, S., Hatton, P., Abbamonte, P., Stanescu, S., & Paixao, J. Resonant Soft X-ray Magnetic Scattering from the 4f and 3d Electrons in DyFe4Al8: Magnetic Interactions in a Cycloidal Antiferromagnet. United States. doi:10.1103/PhysRevB.75.174432.
Beale,T., Wilkins, S., Hatton, P., Abbamonte, P., Stanescu, S., and Paixao, J. Mon . "Resonant Soft X-ray Magnetic Scattering from the 4f and 3d Electrons in DyFe4Al8: Magnetic Interactions in a Cycloidal Antiferromagnet". United States. doi:10.1103/PhysRevB.75.174432.
@article{osti_930531,
title = {Resonant Soft X-ray Magnetic Scattering from the 4f and 3d Electrons in DyFe4Al8: Magnetic Interactions in a Cycloidal Antiferromagnet},
author = {Beale,T. and Wilkins, S. and Hatton, P. and Abbamonte, P. and Stanescu, S. and Paixao, J.},
abstractNote = {},
doi = {10.1103/PhysRevB.75.174432},
journal = {Physical Review B: Condensed Matter and Materials Physics},
number = ,
volume = 75,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}
  • 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 atmore » 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.« less
  • Ti and Mn L{sub {alpha},{beta}} x-ray fluorescence spectra of FeTiO{sub 3} and KMnO{sub 4} were measured with monochromatic photon excitation on selected energies across the L{sub 2,3} absorption edges. The resulting inelastic x-ray-scattering structures and their changes with varying excitation energies are interpreted within the framework of a localized, many-body approach based on the Anderson impurity model, where the radiative process is characterized by transitions to low-energy interionic-charge-transfer excited states. Sweeping the excitation energy through the metal 2p threshold enhances the fluorescence transitions to the antibonding states pushed out of the band of continuous states due to strong metal 3d{endash}ligandmore » 2p hybridization and matching the low-photon-energy satellites in the spectra. Based on the energy position of these charge-transfer satellites with respect to the recombination peak the effective metal 3d{endash}ligand 2p hybridization strength in the ground state of the system can be estimated directly from the experiment. {copyright} {ital 1997} {ital The American Physical Society}« less
  • No abstract prepared.
  • The authors report on the use of a Co/Pt multilayer, which exhibits strong perpendicular magnetic anisotropy, to magnetostatically imprint a domain pattern onto a 50 Angstroms thick Permalloy layer. Element specific soft x-ray magnetic scattering experiments were then performed so as to be sensitive to the magnetic structure of the Permalloy only. Off-specular magnetic satellite peaks, corresponding to a periodic domain stripe width of 270 nm, were observed, confirmed by magnetic force microscopy and micromagnetic modeling. Thus the authors have exploited the element specificity of soft x-ray scattering to discern the purely magnetic correlations in a structurally flat Permalloy film.
  • The magnetic properties of Fe and V in (n ML V / 5 ML Fe) (001) superlattices (n=1, 2, and 5 ML) have been investigated by measuring the magnetization dependent scattering of elliptically polarized soft x rays at various scattering angles and for photon energies across the 2p x-ray-absorption edges of both Fe and V. A quantitative estimate of the magnetic moment induced on vanadium is obtained from the analysis of the resonant scattering data. {copyright} {ital 1999} {ital The American Physical Society}