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Related Experiment Videos

Variation of XMCD spectrum with temperature at R L2,3-edges in R3Fe5O12 (R=Gd and Er).

N Kawamura1, M Suzuki, H Maruyama

  • 1SPring-8/RIKEN, Mikaduki, Hyogo, Japan. naochan@spring8.or.jp

Journal of Synchrotron Radiation
|August 22, 2001
PubMed
Summary

X-ray magnetic circular dichroism (XMCD) at R L2,3-edges in R3Fe5O12 reveals temperature-dependent spectral changes. Iron 3d polarization significantly influences the rare-earth sublattice magnetization, impacting XMCD spectra at low temperatures.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Magnetism

Background:

  • Rare-earth iron garnets (R3Fe5O12) exhibit complex magnetic properties.
  • X-ray magnetic circular dichroism (XMCD) is a powerful probe of element-specific magnetism.

Purpose of the Study:

  • Investigate the temperature dependence of XMCD spectra at R L2,3-edges in Gd3Fe5O12 and Er3Fe5O12.
  • Determine the role of Fe 3d polarization in the magnetic behavior of the R sublattice.

Main Methods:

  • Temperature-dependent XMCD measurements were performed at the R L2,3-edges.
  • Analysis focused on spectral profile variations and peak intensity changes with temperature.

Main Results:

  • A significant alteration in the XMCD spectral profile was observed at reduced temperatures.

Related Experiment Videos

  • The temperature variation of XMCD peak intensity, after accounting for Fe contribution, correlates with R sublattice magnetization.

    • Conclusions:

    • Fe 3d polarization is a critical factor in shaping the XMCD spectra at R L2,3-edges.
    • The study provides insights into the interplay between Fe and R magnetic sublattices in rare-earth iron garnets.