Antiparallel ruthenium coupling in doped La1.2Sr1.8Mn2−xRuxO7

  • F. Weigand
    Max-Planck-Institut für Metallforschung, 70569 Stuttgart, Germany
  • S. Gold
    Max-Planck-Institut für Metallforschung, 70569 Stuttgart, Germany
  • A. Schmid
    Max-Planck-Institut für Metallforschung, 70569 Stuttgart, Germany
  • J. Geissler
    Max-Planck-Institut für Metallforschung, 70569 Stuttgart, Germany
  • E. Goering
    Max-Planck-Institut für Metallforschung, 70569 Stuttgart, Germany
  • K. Dörr
    IFW Dresden, 01171 Dresden, Germany
  • G. Krabbes
    IFW Dresden, 01171 Dresden, Germany
  • K. Ruck
    IFW Dresden, 01171 Dresden, Germany

書誌事項

公開日
2002-09-09
DOI
  • 10.1063/1.1506792
公開者
AIP Publishing

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説明

<jats:p>X-ray magnetic circular dichroism measurements in the hard and soft x-ray region have been performed at Mn K and L2,3 edges of the ruthenium (with x=0.05, 0.1 and 0.5) doped Ruddlesden–Popper-phase La1.2Sr1.8Mn2−xRuxO7. In combination with magnetometry, clear evidence of unexpected antiferromagnetic sublattice coupling between manganese and ruthenium was found. A simple coupling model of Mn+3/Mn+4 and Ru+3/Ru+4 ions in the high-spin state is proposed which explains the antiparallel alignment and the technological interesting increase of the Curie temperature.</jats:p>

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