Valence analysis of transition metal ions in spinel LiMnMO4 (M = Ti, Cr, Mn, Co) by electron energy loss spectroscopy

S. Suzuki, M. Tomita, S. Okada, H. Arai

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Abstract

Electron energy loss spectroscopy combined with a transmission electron microscope was applied to valence analysis of transition metal ions in LiMn2O4, LiMnTiO4, LiMnCrO4 and LiMnCoO4 powder samples. The transition metal 2p multiplet structures were compared with those of appropriate reference samples. The Mn, Ti and Co valences were clearly determined from the 2p spectra as LiMn3+Mn4+O4, LiMn3+Ti4+O4 and LiMn4+Co3+O4, respectively. The O 1s spectra were also effective for analysis of Cr in LiMnCrO4 and showed that the Cr ion was trivalent. The electron configuration of one of nominally tetravalent chromium compounds, CrO2, is also discussed.

Original languageEnglish
Pages (from-to)1851-1856
Number of pages6
JournalJournal of Physics and Chemistry of Solids
Volume57
Issue number12
DOIs
Publication statusPublished - Dec 1 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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