Resonance effect in ELNES from perovskite-type manganites BiMnO3 and LaMnO3

Yasukazu Murakami, Daisuke Shindo, Masae Kikuchi, Jianm Min Zuo, John C.H. Spence

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Fine structures in electron energy-loss spectra, observed 30-40 eV beyond the threshold of oxygen K-edges in perovskite-type manganites BiMnO3 and LaMnO3, are discussed. LaMnO3 with orthorhombic symmetry (space group Pbnm) shows a clear peak in this region. However, BiMnO3 with a heavily distorted perovskite-type structure (monoclinic, space group C2) does not show an appreciable peak. It is demonstrated that peaks in this energy region arise from the resonance effect of ejected core electrons and that the shape is sensitive to the environment of neighbouring oxygen atoms in the perovskite-type structures.

Original languageEnglish
Pages (from-to)99-103
Number of pages5
JournalJournal of Electron Microscopy
Volume51
Issue number2
DOIs
Publication statusPublished - 2002 May 9

Keywords

  • Bond length
  • EELS
  • ELNES
  • Perovskite-type manganites
  • Resonance effects

ASJC Scopus subject areas

  • Instrumentation

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