Determination of manganese oxidation states in solids by electron energy-loss spectroscopy

James H. Rask, Barbara A. Miner, P R Buseck

Research output: Contribution to journalArticle

105 Citations (Scopus)

Abstract

Electron energy-loss spectra of manganese-bearing phases vary systematically with changes in the average oxidation state of manganese. The energy region recorded, 0 to 1000 eV, includes electronic transitions from manganese and oxygen core orbitals, as well as from states that have contributions from both elements. We used a spectrometer attached to a transmission electron microscope (TEM) to obtain reference spectra from manganese metal and from manganese oxides that contain Mn2+, Mn3+, and Mn4+. Such reference spectra can be used to estimate the manganese oxidation state for uncharacterized manganese-bearing solids. Areas with diameters as small as 0.1 μm can be analyzed, thus avoiding the uncertainties associated with bulk analyses of fine-grained, heterogeneous mixtures. Similar determinations of reference energy-loss spectra for other polyvalent elements will broaden the applicability of this technique for the study of small volumes of solids.

Original languageEnglish (US)
Pages (from-to)321-326
Number of pages6
JournalUltramicroscopy
Volume21
Issue number4
DOIs
StatePublished - 1987

Fingerprint

Electron energy loss spectroscopy
Manganese
manganese
energy dissipation
electron energy
Oxidation
oxidation
Bearings (structural)
spectroscopy
Energy dissipation
Manganese oxide
manganese oxides
Spectrometers
Electron microscopes
electron microscopes
Metals
spectrometers
Oxygen
orbitals
Electrons

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation

Cite this

Determination of manganese oxidation states in solids by electron energy-loss spectroscopy. / Rask, James H.; Miner, Barbara A.; Buseck, P R.

In: Ultramicroscopy, Vol. 21, No. 4, 1987, p. 321-326.

Research output: Contribution to journalArticle

Rask, James H. ; Miner, Barbara A. ; Buseck, P R. / Determination of manganese oxidation states in solids by electron energy-loss spectroscopy. In: Ultramicroscopy. 1987 ; Vol. 21, No. 4. pp. 321-326.
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