Direct Evidence of Simultaneous Reversal of Ferrimagnetically Coupled Sm 4f and Mn 3d Angular Momenta in SmMnO3

J. S. Jung, T. Nakamura, Y. Wakabayashi, T. Kimura

Research output: Contribution to journalArticlepeer-review

Abstract

Using the soft X-ray magnetic circular dichroism (XMCD) technique, we investigated the magnetic states of the Sm 4f and the Mn 3d moments in a Néel N-type ferrimagnet, SmMnO3, which exhibits a striking magnetocapacitive effect around the compensation temperature (Tcomp ≈ 9.4 K). The XMCD results show that the Sm 4f and the Mn 3d moments were always aligned antiparallel to each other and that, upon sweeping a magnetic field, the angular momenta of Sm 4f and Mn 3d were simultaneously reversed at the field where the magnetocapacitive effect was observed. This indicates that the magnetocapacitive effect of SmMnO3 is induced by a simultaneous reversal of Sm 4f and Mn 3d angular momenta, i.e., magnetization reversal. We discuss a plausible origin of the magnetocapacitive effect in terms of the p-d hybridization mechanism.

Original languageEnglish
Pages (from-to)904-910
Number of pages7
JournalJournal of the Korean Physical Society
Volume76
Issue number10
DOIs
Publication statusPublished - 2020 May 1

Keywords

  • 61.05.cj
  • 75.25.−j
  • 75.60.Jk
  • Magnetization reversal
  • Rare-earth manganite
  • X-ray magnetic circular dichroism

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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