Direct observation of the ferrimagnetic coupling of A-site Cu and B-site Fe spins in charge-disproportionated CaCu3Fe4O12

M. Mizumaki, W. T. Chen, T. Saito, I. Yamada, J. Paul Attfield, Y. Shimakawa

Research output: Contribution to journalArticlepeer-review

Abstract

The magnetic coupling between Fe and Cu moments in the charge-disproportionated CaCu3Fe4O12 is studied by neutron powder diffraction, x-ray absorption, and magnetic circular dichroism measurements. The magnetic moments of the B-site Fe are coupled antiferromagnetically with those of the A'-site Cu, and the Fe3+ and Fe5+ spins at the B site align ferromagnetically. The orbital contribution of the magnetic moment for Fe is significant and appears to stabilize the ferrimagnetic structure of charge-disproportionated CaCu3Fe4O12.

Original languageEnglish
Article number094418
Pages (from-to)-
Number of pages4
JournalPhysical review B: Condensed matter and materials physics
Volume84
Issue number9
DOIs
Publication statusPublished - 15 Sep 2011

Keywords

  • RAY CIRCULAR-DICHROISM
  • PEROVSKITE
  • MAGNETORESISTANCE

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