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

doi:10.1016/S0022-3697(96)00071-6

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

Research output: Contribution to journal › Article › peer-review

40 Citations (Scopus)

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 language	English
Pages (from-to)	1851-1856
Number of pages	6
Journal	Journal of Physics and Chemistry of Solids
Volume	57
Issue number	12
DOIs	https://doi.org/10.1016/S0022-3697(96)00071-6
Publication status	Published - Dec 1 1996
Externally published	Yes

All Science Journal Classification (ASJC) codes

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

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10.1016/S0022-3697(96)00071-6

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

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.",

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T1 - Valence analysis of transition metal ions in spinel LiMnMO4 (M = Ti, Cr, Mn, Co) by electron energy loss spectroscopy

AU - Suzuki, S.

AU - Tomita, M.

AU - Okada, S.

AU - Arai, H.

PY - 1996/12/1

Y1 - 1996/12/1

N2 - 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.

AB - 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.

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